Serving Fitchburg with Excellence

Fast, Honest HVAC Service From a Team That Stands Behind Every Job

Serving Fitchburg with quality heating and cooling service means being ready for everything this region demands — older multi-family homes, a mix of gas and oil heating systems, and winters that test every piece of HVAC equipment in the area. Shelly Heating and Cooling provides residential HVAC services throughout Fitchburg, covering everything from emergency furnace and boiler repairs to full system installations and seasonal maintenance visits. Fitchburg homes vary widely in age and construction, and that variety requires a contractor who has real experience across different system types rather than one who specializes in only the newest equipment. Every call from a Fitchburg homeowner gets a direct response — no voicemail, no call center — and every job gets honest pricing before the work starts. When your heating or cooling system needs attention in Fitchburg, Shelly Heating and Cooling is available around the clock to get it handled.

Why Choose Our Services in Fitchburg?

Experienced working on the wide range of HVAC systems found in Fitchburg homes
Around-the-clock availability for heating and cooling emergencies in the area
Clear, upfront pricing before any work begins — no unexpected charges after
Services gas, oil, and propane heating systems across all major brands
Responsive communication directly with the owners of the business
Same-day repairs handled on most common heating and cooling failures
Reliable HVAC service backed by a family-owned business you can trust

Our Services in Massachusetts

Heating & Cooling Services Built for New England Winters and Summers

Furnace Installation & Replacement

When your furnace reaches the end of its life, replacing it at the right time saves you money and keeps your home safe. We install high-efficiency furnaces from trusted brands and make sure the system is sized correctly for your home. A bad install causes problems for years — we do it right the first time. Whether you are upgrading an older unit or replacing one that has failed, we handle the whole job.

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Furnace Repair

A furnace that stops working in the middle of a Massachusetts winter is not something you can wait on. We diagnose the problem fast and give you a straight answer on what it will take to fix it. Most repairs are handled the same day. We work on all makes and models, so you do not need to worry about whether we can service yours.

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Air Conditioning Installation & Replacement

Summers in central Massachusetts get humid and hot, and a properly installed AC system makes a real difference. We size the equipment to your home so it cools efficiently without running up your electric bill. If your old system is outdated or undersized, we walk you through your options before any work begins. The goal is a system that performs well for years, not just the first season.

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Air Conditioning Repair

When your AC stops cooling, we get to the root of the problem instead of guessing. Low refrigerant, failed capacitors, frozen coils — we have seen it all and know how to fix it. You get a clear explanation of what is wrong and what the repair will cost before we start. We do not recommend replacing a system unless it genuinely needs it.

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Heat Pump Installation & Repair

Heat pumps are one of the most efficient ways to heat and cool a home, and we install and service them regularly. They work year-round, which means the installation has to be done correctly for both heating and cooling seasons. If your existing heat pump is not performing the way it should, we diagnose and repair it quickly. We work on both ducted and ductless heat pump systems.

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Boiler Installation & Repair

Boilers are common in older New England homes and require a technician who actually knows them well. We install new boiler systems and repair existing ones, from simple fixes to full replacements. Whether you have a gas, oil, or propane boiler, we service it. Consistent heat through your radiators or baseboard starts with a boiler that is running the way it should.

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Ductless Mini-Split Installation & Service

Mini-splits are a great solution for additions, older homes without ductwork, or rooms that never seem to get comfortable. We install single-zone and multi-zone systems and handle the full job from start to finish. If you already have a mini-split that is underperforming or making noise, we service those too. It is one of the most flexible and efficient options available for home comfort.

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HVAC Maintenance & Seasonal Tune-Ups

Most HVAC problems do not come out of nowhere — they build up over time when systems are not maintained. A seasonal tune-up catches small issues before they turn into expensive repairs. We clean, inspect, and test your equipment so it runs efficiently through peak heating and cooling season. Staying on top of maintenance also extends the life of your system.

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Emergency HVAC Service

We are available 24 hours a day, 7 days a week, including holidays. When your heat goes out at 2 AM in January or your AC fails during a heat wave, you need someone who actually answers. We respond fast and arrive prepared to get your system running again. Emergency calls are handled with the same care and quality as any scheduled appointment.

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Indoor Air Quality & Ventilation

The air inside your home affects how comfortable and healthy your space feels every day. Poor ventilation, excess humidity, and airborne particles are all problems we can address. We assess your current setup and recommend solutions that fit your home and budget. Better air quality is one of those things people notice immediately after we improve it.

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Thermostat Installation & Smart Thermostat Upgrades

Your thermostat controls how your entire HVAC system behaves, and an outdated one wastes energy and causes inconsistent temperatures. We install programmable and smart thermostats that give you better control and lower utility bills. If you have already purchased a smart thermostat and are not sure how to set it up properly with your system, we handle that too. A correctly configured thermostat makes a noticeable difference in comfort and efficiency.

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Oil Tank Installation & Replacement

An aging or leaking oil tank does not fix itself — and waiting too long turns a straightforward replacement into an emergency. We install both standard steel and Roth double-wall tanks, handle the full removal of your old tank, and make sure everything is up to code before we leave. As a Roth certified family-owned business, we do the job right the first time.