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United Mechanical has served Cranston homeowners, landlords, property managers, and businesses since 2010. We handle the full range of heating and cooling work: AC repair and service, furnace and heating repair, heat pump service, ductless mini-split installation, full system installation and replacement, ductwork, thermostats, indoor air quality, and emergency HVAC response. One number. One call. One HVAC tech at your door.

We are locally owned and personally accountable for every job we take on. Our reputation here is the only one we have. That means we show up, we do the work right, and we stand behind it.

Full-Service HVAC in Cranston

What sets our technicians apart is straightforward: we cover everything a home or commercial property needs on the heating-and-cooling side. That means seasonal maintenance and tune-ups, same-day emergency no-heat and no-cool response, and full system installation when a repair no longer makes sense. We serve residential customers across Cranston and commercial accounts throughout Providence County, from single-family homes to multi-unit buildings and office spaces.

We treat your home and its system the way we would our own, and that standard applies whether we are diagnosing a furnace on a January night or installing a new central air system in the spring. We'll handle the system so you don't have to.

AC Repair, Service, and Installation

Dealing with a furnace that won't keep up or an AC that can't cool? We handle both, and on the air-conditioning side we see it all: units that stop working without warning, systems blowing warm air, compressors cycling off too fast, and refrigerant leaks that quietly rob efficiency all season. When we arrive for a diagnostic, we check the condenser and compressor, inspect the evaporator coil, test refrigerant charge, and trace any airflow and uneven-temperature problems back to their source.

We show up on time and ready to work, which matters when a Cranston summer has your home uncomfortable and your patience running short. Same-day AC repair is available for urgent calls. If your central air system is aging or the repair cost doesn't pencil out, we'll walk you through replacement options and central air installation that fits your home and your budget. We're one phone call from getting your comfort right.

Furnace and Heating Repair

Rhode Island winters are not forgiving, and a furnace that stops working in the middle of one is a genuine problem. We respond to no-heat calls, furnaces blowing cold air, systems that short-cycle or run constantly, and complete heating system failures. Our work covers air handler and blower service, furnace tune-up and inspection, and full furnace replacement when the equipment has run its course.

We serve both residential and commercial heating customers, and we keep same-day and emergency heating response available for calls that cannot wait. Whether the issue is a faulty igniter, a failed control board, or a heat exchanger that has seen too many seasons, we diagnose it accurately and fix it right. We'll have your system running again in no time.

Heat Pump Repair and Installation

For homeowners and property managers who want it done right, a heat pump is one of the most efficient ways to handle both heating and cooling in a single system. We service heat pumps that are not heating, not cooling, or not keeping up with demand. We also handle heat pump tune-up and maintenance, refrigerant leak diagnosis, and full heat pump replacement when the equipment no longer performs reliably.

When we arrive for a heat pump visit, we test the reversing valve, check refrigerant levels, inspect the coil and air handler, and assess the zoning and comfort-control systems if the property uses them. Sometimes a repair is the right call; sometimes the age and condition of the unit make replacement the smarter investment. We'll give you an honest read either way. We're one phone call from getting your comfort right.

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Cranston's Featured Heating and Cooling Services

Cranston and the broader Providence County area carry some of the oldest housing stock in New England. That means boilers, steam and hot-water radiators, and oil-fired heating systems are common across the city. At the same time, many older homes were built without ductwork, and humid New England summers create real comfort challenges. The three services below come up constantly in this area, and we handle all of them.

Boiler and Hydronic Heating Service

A large share of Cranston homes still heat with a boiler. Hot-water and steam radiator systems are durable, but they need regular attention to stay efficient and safe. We service, repair, and replace boilers for residential and commercial properties, and we keep emergency no-heat response available for calls that come in on the coldest nights. A seasonal tune-up on a hydronic space heating system catches pressure problems, worn seals, and circulation issues before they become failures.

One note worth making clearly: a boiler heats your living space and is HVAC work; a water heater heats the domestic water you use for showers and washing, and that is plumbing. We handle boilers. We stand behind every system we service, and that starts with knowing exactly which work is ours to do. We'll handle the system so you don't have to.

Oil-to-Gas and Heat Pump Conversion

The Northeast holds roughly 79 percent of the country's oil-heat homes, and Providence County is no exception. Fuel-oil prices fluctuate, supply logistics are real, and many homeowners are looking at what it takes to move to a more stable or lower-emission heat source. We handle the HVAC side of that conversion: removing the existing oil-fired equipment, sizing and installing the replacement heating unit (gas-fired or heat pump), and making the equipment-side connections.

The gas-line run itself belongs to a licensed plumber or gas fitter; we speak to the heating unit and its installation, not the piping. Our work on these conversions is performed by qualified HVAC technicians who understand both the old equipment and the new. Energy-efficiency upgrades and heating system replacement are both part of what we do, and we'll walk you through the options clearly. We're one phone call from getting your comfort right.

Ductless Mini-Split Installation

Many Cranston homes were built before central air was standard, and adding ductwork to an older structure is often impractical or expensive. Ductless mini-split systems solve that problem directly. A mini-split handles both heating and cooling without requiring existing ductwork, making them a natural fit for additions, converted spaces, and whole-home retrofits in older properties.

We install mini-split and ductless systems, repair units that are not cooling or not heating, and design zoning and comfort-control systems that let different rooms run at different temperatures. If you have been relying on window units and want a cleaner, more efficient solution, a mini-split installation is worth a conversation. We'll handle the system so you don't have to.

Ductwork, Thermostats, and Indoor Air Quality

Getting your comfort back is easier than you think, and sometimes the fix is not the equipment itself. Leaky ductwork quietly drives up energy bills and creates airflow and uneven-temperature problems throughout a home. We repair and seal duct systems, track down leaks, and restore proper airflow to rooms that have been running hot or cold for years.

On the controls side, we replace outdated thermostats and install smart thermostat systems that give homeowners and property managers better visibility and control over their systems. If a thermostat is not working or is not communicating with the equipment, we diagnose and fix it.

We also handle indoor air quality service and air filtration installation. New England's humidity swings, from damp summers to dry heated winters, make whole-home air filtration and humidity management genuinely useful here, not just an upsell. We protect your floors and finishes while we work, and we clean up before we leave. We'll handle the system so you don't have to.

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Seasonal Tune-Ups and Preventive Maintenance

Doing HVAC work right matters, and we'll help you get it right before a breakdown forces the issue. A spring or fall tune-up on your heating or cooling system catches problems early: short cycling, a system running constantly, high energy bills that do not match the season, and refrigerant leak diagnosis that prevents a small issue from becoming a full repair call.

A standard tune-up visit includes inspecting the air handler and blower, checking refrigerant charge, testing controls and safety switches, cleaning coils and filters, and confirming the system is ready for the season ahead. We perform preventive maintenance on both residential and commercial systems, and a well-maintained system simply lasts longer. We'll handle the system so you don't have to.

Emergency HVAC Service

Some calls cannot wait until Monday. When a furnace stops working on a cold night or an AC fails during a heat wave, we respond. We pick up the phone. We arrive on time. We check before we leave.

Emergency HVAC repair covers no-heat and no-cool situations, after-hours and weekend calls, emergency furnace repair, emergency AC repair, and emergency heat pump repair. When you call urgently, you can expect a real answer, a clear timeline, and a technician who arrives prepared to diagnose and fix the problem in a single visit whenever possible. We're one phone call from getting your comfort right.

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Residential and Commercial HVAC Service

We work with homeowners, landlords, property managers, and commercial accounts across the area. On the residential side, that means home HVAC repair and installation, rental property and apartment HVAC, and service calls that fit around a tenant's schedule when a landlord cannot be on site.

On the commercial side, we service and replace HVAC systems in offices, retail spaces, restaurants, and warehouses. Commercial HVAC replacement and commercial HVAC estimates are part of our regular work, and we understand the urgency that comes with keeping a business comfortable for staff and customers. Work is performed by qualified HVAC technicians on every job, regardless of size. If you have had another company give you a diagnosis you are not sure about, we are also available for an HVAC second opinion. We'll handle the system so you don't have to.

Serving Cranston and the Surrounding Area

We work throughout Cranston and take calls from communities across the region. Our regular service area includes Warwick, Providence, Johnston, West Warwick, North Providence, Pawtucket, and East Providence. If you are nearby and not sure whether we cover your area, call and ask. Chances are we do.

Routine & Emergency Service

Frequently Asked Questions

What does a boiler tune-up or service visit involve?

A boiler service visit includes inspecting the heat exchanger, checking system pressure and circulation, testing safety controls, and looking for signs of wear at seals and valves. We also bleed and balance the hydronic system if needed, and we tell you clearly what we find before recommending any repair.

Short-cycling and cold-air problems usually trace back to a few common causes: a faulty igniter, a tripped limit switch, a dirty flame sensor, or a heat exchanger issue. We work through the system methodically, test the controls and safety switches, and identify the root cause before recommending a fix.

On the HVAC side, a conversion means removing the existing oil-fired equipment, sizing the replacement unit, and installing the new heating system with the correct connections to the home's distribution system. The gas-line run itself belongs to a licensed plumber or gas fitter. We handle the heating unit and its installation, and our work is performed by qualified HVAC technicians who know both the old equipment and the new.

We look at the age of the equipment, the cost and scope of the repair, and how efficiently the system is running. An older boiler with a single straightforward fix is often worth repairing. A system that is failing in multiple places or has reached the end of its expected service life is usually a better candidate for replacement, and we will give you an honest read either way.

A mini-split installation involves mounting the indoor air-handling unit, positioning the outdoor compressor unit, and running the refrigerant line set and control wiring through a small penetration in the wall. There is no ductwork to cut into, no major construction, and most installations are completed in a day. It is a cleaner process than adding ductwork to an older home.

We offer same-day emergency response for no-heat and no-cool situations throughout Cranston and the surrounding area. We are available every day from 6:00 AM to 10:00 PM, and we take urgent heating calls seriously, especially during a Rhode Island winter.

At the outdoor unit, we inspect the condenser coil and fan, check refrigerant charge, test the compressor, look for refrigerant leaks, and confirm that the electrical connections to the unit are intact. We also clear any debris that is restricting airflow around the cabinet.

At the air handler, we inspect the evaporator coil, check the blower motor and fan, test the drain and condensate handling, look at filter condition, and verify that the controls and safety switches are responding correctly. Airflow problems and uneven temperatures often trace back to something at the air handler.

A burning smell at the start of the heating season is often dust burning off a heat exchanger that has been sitting idle, and it usually clears on its own. A persistent burning smell, a musty odor that suggests mold or moisture in the ductwork, or any smell of combustion gases are situations that need a technician to look at promptly. Call (401) 535-9789 and we will assess it.

Uneven temperatures usually point to a ductwork problem, an airflow restriction, or an equipment issue that is preventing the system from distributing conditioned air evenly. We trace the problem back to its source, whether that is a leaky duct, a closed or undersized register, a failing blower, or a zoning issue, and fix it at the cause rather than just adjusting the thermostat.

A general rule is that when the repair cost approaches or exceeds half the cost of a new system, and the equipment is already past the middle of its expected service life, replacement is usually the smarter investment. We give you the repair cost and the replacement cost side by side so you can make an informed decision, not a pressured one.

Yes. Leaky, undersized, or poorly routed ductwork can undermine even a well-maintained system, driving up energy bills and leaving rooms uncomfortable. If a system seems to be running fine but the comfort is not there, a duct inspection is a practical next step.

Efficiency loss usually comes from a combination of factors: dirty coils, low refrigerant charge, a clogged filter, worn blower components, and duct leakage that lets conditioned air escape before it reaches the living space. A seasonal tune-up addresses most of these before they compound into a larger problem.

Get an Estimate on Your HVAC Repair or Installation

United Mechanical is Cranston's locally owned, full-service HVAC contractor. We have been handling heating and cooling work for homes and businesses across the area since 2010, and we plan to be doing the same thing for the next sixteen years. We treat your home and its system the way we would our own, and that is not something we say lightly.

Whether you need emergency service today, a seasonal tune-up, a new system, or a second opinion on a repair estimate, we are ready to help. Call (401) 535-9789 for a quote or to schedule service.

HVAC Services and the Questions We Hear Most

We handle the full range of residential and commercial heating and cooling work in Cranston and across Providence County. Whether you need a quick repair, a seasonal tune-up, or a complete system replacement, our technicians are ready to help. The table below covers every service we offer, who it fits best, and a practical note to help you figure out your next step. Call (401) 535-9789 to talk through what your system needs.

System ServiceWhat's IncludedCommon NeedsThings to Know
Heating & Furnace Repair
  • ignition and burner diagnosis
  • blower motor service
  • heat exchanger inspection
  • thermostat communication issues
any home or business that has lost heat or is heating unevenlyEmergency no-heat calls are a priority; we respond quickly when the temperature drops.
Emergency HVAC Service
  • same-day no-heat response
  • same-day no-cool response
  • system-down diagnosis
  • urgent repair or temporary stabilization
homeowners and property managers facing a system failure that cannot waitWe are available every day from 6:00 AM to 10:00 PM, including weekends.
AC Repair & Service
  • condenser and compressor diagnosis
  • refrigerant leak repair
  • evaporator coil service
  • airflow and cooling performance
homeowners whose AC is struggling or has stopped coolingSame-day visits are available for urgent no-cool situations during warm months.
Ductwork Repair & Sealing
  • duct leak detection
  • sealing and patching
  • damaged section repair or replacement
  • duct assessment for older homes
homes with uneven temperatures, high energy bills, or ductwork that has never been inspectedMany older Cranston homes have ductwork that has never been assessed; a single visit can reveal significant efficiency losses.
Heat Pump Repair & Installation
  • heat pump diagnostics and repair
  • seasonal efficiency tune-ups
  • new heat pump system installation
  • year-round heating and cooling from one unit
homeowners who want reliable heating and cooling without running two separate systemsHeat pumps are a strong fit for Providence County's four-season climate.
Indoor Air Quality & Air Filtration
  • whole-home air filtration installation
  • UV air purifier installation
  • whole-home humidifier installation
  • airborne allergen and contaminant reduction
households concerned about allergens, dust, or dry winter airNew England winters are long and dry; a whole-home humidifier paired with your heating system can make a noticeable difference.
Ductless Mini-Split Installation
  • single-zone and multi-zone mini-split installation
  • heating and cooling from one unit
  • room addition and finished-space coverage
  • no ductwork required
older Cranston homes without existing ductwork, plus additions, sunrooms, and finished basementsMini-splits handle both heating and cooling, which matters in a climate with real winters and genuinely humid summers.
Seasonal Maintenance & Tune-Ups
  • spring AC tune-up
  • fall heating system tune-up
  • filter and coil inspection
  • system performance testing
any homeowner or property manager who wants to avoid mid-season breakdownsCatching small issues in the fall prevents no-heat emergencies in January.
Thermostat & Smart-Control Installation
  • programmable thermostat installation
  • smart thermostat setup
  • zoning control installation
  • system compatibility check
homeowners who want more consistent comfort and better control over their systemA thermostat upgrade is one of the more affordable ways to improve how a healthy system performs.
Oil-to-Gas & Heat-Pump Conversion
  • new gas furnace or boiler installation
  • heat pump system installation as replacement
  • connection to existing distribution system
  • removal of old oil-fired equipment
homeowners ready to move away from fuel oil to a more stable or efficient heating sourceThe Northeast has more oil-heated homes than any other region; conversions are a common call for us here in Providence County.
Boiler & Hydronic Heating Service
  • boiler repair and service
  • hot-water and steam system diagnosis
  • hydronic system balancing and bleeding
  • aging boiler assessment
Cranston homes built with boilers and radiator-based heating systemsA significant share of older homes in this area run on boilers; our technicians know these systems well.

Answers to Common Questions

How do I know whether to repair or replace my heating or cooling system?

A good rule of thumb is to weigh the repair cost against the age and condition of the equipment. If a system is more than 15 years old and the repair runs to several hundred dollars or more, replacement often makes more financial sense over time. We diagnose the system first and give you an honest read on both options before any work begins, so you can make the call with clear information.

What are the signs that my AC or furnace may need to be replaced soon?

Frequent repairs, rising energy bills without a change in usage, uneven heating or cooling throughout the home, and a system that is 15 to 20 years old are all signals worth paying attention to. A system that short-cycles (turns on and off more than it should) or makes new noises it did not used to make is also telling you something. A diagnostic visit gives you a clear picture of where the equipment stands.

How often should I schedule a maintenance tune-up?

Twice a year is the standard: once in the spring before cooling season and once in the fall before heating season. Each visit covers inspection, cleaning, and testing so the system is ready for the demand ahead. Consistent maintenance catches small problems before they become expensive mid-season failures.

Transparent Upfront Pricing

We explain the diagnosis and the cost before any work begins. If something changes mid-job, we tell you before moving forward, so there are no surprises when the work is done.

What does a seasonal tune-up actually include?

We inspect and clean the key components of the system, check refrigerant levels and electrical connections, test thermostat operation, inspect the heat exchanger or coil, and run the system through its cycle to confirm it is performing correctly. We also let you know if we find anything that needs attention, so you are not surprised later.

Why is one room in my house hotter or colder than the rest?

Uneven temperatures are usually a ductwork problem, an airflow issue, or a sign that the system is undersized for the space. Leaky or disconnected ducts, a dirty filter, or a blower motor that is not moving enough air can all cause hot and cold spots. A thermostat or zoning issue can also be the culprit. We diagnose the cause rather than guess at it.

How does a dirty filter or coil affect my system?

A clogged filter restricts airflow, which forces the system to work harder and can cause it to overheat or freeze up. A dirty evaporator coil does the same thing on the cooling side: it cannot absorb heat efficiently, so the system runs longer and delivers less comfort. Replacing the filter regularly and keeping the coil clean are two of the simplest ways to protect the equipment.

Experienced With Older and Newer Systems

From aging boilers and oil-fired furnaces to modern heat pumps and smart-control systems, our technicians work on the full range of equipment common to homes in this part of Rhode Island.

What causes a system to short-cycle?

Short-cycling means the system turns on, runs briefly, and shuts off before completing a full cycle. Common causes include an oversized system, a refrigerant leak, a dirty filter, a failing thermostat, or a safety switch tripping due to overheating. It is worth having a technician look at it because short-cycling puts extra wear on the equipment and usually points to a problem that will get worse.

Can I get same-day service if my heat or AC goes out?

Yes. For urgent no-heat and no-cool situations, we offer same-day service and emergency response throughout Cranston and the surrounding area. We are available every day from 6:00 AM to 10:00 PM, including weekends. Call (401) 535-9789 and we will get you on the schedule as quickly as possible.

Clean and Respectful Workmanship

We protect your floors and finishes while we work and leave every job site the way we found it. We treat your home and its system the way we would our own.

How does your pricing and estimate process work?

We do not quote a number before we know what we are looking at, and we do not start work before you know what it costs. The technician diagnoses the system, explains what needs to be done, and gives you a clear price before anything is decided. If the scope changes once we are into the job, we communicate that before moving forward.

Do I need to be home when the technician comes out?

For most residential jobs, yes, someone should be present so the technician can access the equipment and go over the findings with you directly. For property managers and landlords, we can coordinate access and scheduling with tenants when the property owner cannot be on site.

What is involved in switching from oil heat to a gas furnace or heat pump?

On the HVAC side, a conversion means installing a new heating unit and connecting it to the home's existing distribution system, whether that is ductwork or a hydronic setup. We handle the equipment and its installation. If you are weighing a gas furnace against a heat pump, a call to walk through your current setup is the right starting point. We will explain what each option involves and what you can expect from the process.

Every home and system is a little different, so call (401) 535-9789 and we will help you figure out exactly what yours needs.

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(401) 535-9789