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Top-Rated Furnace / forced air heating system install or replace pros in Bethlehem - Updated Nov 2026

Avatar for Kelley's Heating & Cooling, LLC
Kelley's Heating & Cooling, LLC
4.9(
11
)
Heat Pump - Install or ReplaceDucts & Vents - Install or ReplaceElectric Furnace / Forced Air Heating System - Install+19 more

Serving Bethlehem, CT and surrounding areas

Approved

In business since 2022

Free estimates

Credit card accepted

"ð   A BIG THANK YOU! ð   I would like to send a BIG THANK YOU to @Kelley's Heating & Cooling LLC. Ryan and his crew were incredibly professional from our first contact all the way through to the detailed instructions on how to operate our new cooling system. If you're in need of heating and cooling services, I highly recommend contacting them. Whether you're looking for a new installation or maintenance on your current system, Kelley's Heating & Cooling LLC is the way to go. It was truly a pleasure working with them! Thank you again, Ryan and team! ð  Â"
Response time1 day
13 neighbors recently requested a quote
Recommended by72%of homeowners
Avatar for Perfect Timing Heating & Cooling
Perfect Timing Heating & Cooling
5.0(
15
)
Oil Furnace / Forced Air Heating System - InstallGas Furnace / Forced Air Heating System - InstallElectric Furnace / Forced Air Heating System - Install+4 more

Serving Bethlehem, CT and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

"Pelletier replaced my 2 zone oil furnace and 2 separate hot water heaters, one natural gas and one electric with a new natural gas heating / hot water system 3 years ago. I continue to use them for my preventive check up yearly. I was extremely pleased from the first meeting where a complete review of the entire home was performed and a recommendation was made including a price quote. I initially had contacted 3 companies, for quotes and Pelletier's was the middle price. I was also impressed with their professionalism. They provided me with information on finance options available and assistance with them. Once I committed to the project and work started, I was impressed with the work being done every day. The workers showed up on time, were very neat, cleaned up every night and were always polite when they were at my home. All permits and town inspections were coordinated by Pelletier and I did not go a minute without heat or hot water. I was even more confident with my choice of companies when the inspector stated the system was impressive and not like any he had previously seen. In the first year the cost of heat and hot water for both units was cut in half and we continue to realize the savings."
Gary with his fleet
Mike and his Truck
All Hands On Deck!
The Fleet
The Fleet

+1

Response time7 hrs
Response rate100%
39 neighbors recently requested a quote
Avatar for Northeast Heating & Cooling
Northeast Heating & Cooling
5.0(
8
)
Heat Pump - Install or ReplaceDuctless Mini-split Heating System - Install or ReplaceDucts & Vents - Install or Replace+8 more

Serving Bethlehem, CT and surrounding areas

Approved

In business since 2019

Free estimates

Emergency services offered

"I don’t usually write reviews, but I felt like I had to for this one. I’d been dealing with an ongoing furnace problem for weeks and had a couple other companies come out but nobody could give me a straight answer or actually fix the issue. When Enea from Northeast Heating and Cooling showed up, he figured it out almost immediately. He was able to explain to me what was wrong in simple terms, fix the problem on the spot, and even made sure it won’t happen again. The technician was professional, thorough, and you could tell he actually knew what they were doing. After all the frustration I had before, their service was honestly a huge relief. Highly recommend them."
Trane Furnace
Exposed Spiral Duct
Response time6 hrs
Response rate100%
5 neighbors recently requested a quote
Thurston Duct Cleaning and Powerwashing
4.6(
57
)
Oil Furnace / Forced Air Heating System - InstallGas Furnace / Forced Air Heating System - Install

Serving Bethlehem, CT and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

"Very happy buyer of their service They took their time cleaned up after them self Great value for the MONEY !!!!!! I would recommend them to any one who needs Duct work cleaning!!!!!"
Residential Cleaning
Trailer Mounted Vacuum
8" Hose Attached
Suction Applied
Air Brush Ductwork

+3

1 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Connoles Electric, LLC
Connoles Electric, LLC
4.8(
82
)
Electrical Baseboard or Wall Heater - Install

Serving Bethlehem, CT and surrounding areas

Approved

In business since 1984

Free estimates

Credit card accepted

"Ted and Robert arrived, got right t to it and within a few hours we had 2 ceiling fans installed, one which had no existing light so it was a more involved project. They were professional and stuck to their original quote! To say we are impressed is an understatement. We strongly recommend using Connole Electric."
2 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for J Thurston Fuel
J Thurston Fuel
5.0(
4
)
Gas Furnace / Forced Air Heating System - InstallOil Furnace / Forced Air Heating System - InstallBoiler or Radiator Heating System - Install or Replace+11 more

Serving Bethlehem, CT and surrounding areas

Approved

In business since 1999

Free estimates

Credit card accepted

"Very accommodating to my schedule. Everything neatly done . The final copper work looks like a piece of art. These people know what they are doing make no mistake about that. If you want the best hire this company. They are very knowledgeable and answer all of your questions. They are very easy to work with every step of the way for your project"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+9

9 neighbors recently requested a quote
Recommended by75%of homeowners
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FAQs for furnace / forced air heating system install or replace projects in Bethlehem, CT

Converting from an oil furnace to an electric furnace isn't a simple swap—the oil system needs to be completely removed before installing the electric furnace. You'll need a full electric system installation, but you might be able to reuse existing ductwork if it's up to current safety standards. You’ll need to budget for a new electric furnace installation, which costs between $1,800 and $6,200, including professional removal, proper disposal, and safe installation of the new system.

Electric furnaces are 100% efficient at converting electricity into heat. However, some of that heat can be lost as it travels through your home's ductwork or escapes through poorly insulated areas. That's why regular duct maintenance and proper home insulation are important to maximize your furnace's efficiency and reduce heat loss, ensuring consistent warmth and lower energy costs.

With proper maintenance, an electric furnace can last anywhere from 20 to 30 years, outlasting the average gas furnace's lifespan of 15 to 20 years. To keep your electric furnace running efficiently, schedule regular cleanings, tighten connections, and have inspections done before winter arrives. With routine maintenance, you’ll ensure consistent, safe heating for years to come.

The size of the electric furnace you need depends on factors like your home's square footage, climate, and insulation quality. As a general guideline, those who live in warmer climates should multiply their square footage by 30 to 35 BTUs, while those in cooler areas should multiply it by 50 to 60 BTUs.

Consulting with an HVAC professional can help you determine the exact size that's right for your home.

An electric furnace works by converting electricity into heat using high-resistance heating elements. A blower then pushes the warm air through your home's ductwork, distributing heat evenly throughout your space. Since there's no combustion involved, electric furnaces eliminate the risks associated with gas furnaces and provide consistent, reliable heating when properly installed.

An electric furnace uses between 40 and 80 kilowatts per day to heat your home. The exact amount it uses depends on factors like your home's size, insulation, and overall energy requirements. Larger homes or those with poor insulation use more energy than smaller, well-insulated spaces. A professional furnace assessment can help confirm the ideal unit size for your needs.

The Bethlehem, CT homeowners’ guide to furnace / forced air heating system installs or replaces

From average costs to expert advice, get all the answers you need to get your job done.