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Find Furnace / forced air heating system install or replace pros in Sag Harbor

Avatar for MSD Heating & Cooling
MSD Heating & Cooling
4.8(
73
)

Serving Sag Harbor, NY and surrounding areas

Approved

In business since 2002

Free estimates

Emergency services offered

"I was very happy with my experience using this company. In the middle of a heat wave, right before the July 4th holiday, my AC stopped working. The man who installed it and had been servicing it was too busy to come for a week. I called MSD and was given an appointment for 8 AM the next morning. They were prompt and courteous, fixed my problem, and were reasonably priced. I will be calling them in the future."
Additional Photos
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+1

3 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Natural Breeze LLC.
Natural Breeze LLC.
4.9(
16
)

Serving Sag Harbor, NY and surrounding areas

Approved

In business since 2022

Free estimates

Emergency services offered

"Natural Breeze has been a trusted business for us. They installed all of our heat pumps and just yesterday came to our rescue with a new hot water heater. Luis is wonderful. Thank you Natural Breeze!"
Heating & A/C Project
Heating & A/C Project
Additional Photos
Additional Photos
Additional Photos

+25

6 neighbors recently requested a quote
Recommended by50%of homeowners
Avatar for Grant Heating & Cooling, Inc.
Grant Heating & Cooling, Inc.
4.1(
88
)

Serving Sag Harbor, NY and surrounding areas

Approved

In business since 1969

Free estimates

Emergency services offered

"I contracted with Grant Heating & Cooling Inc. to install HVAC system in my home in the spring of 2024. They were very professional and did a very good job. In the winter of 2025 I had a minor problem with one of the Mitsubishi heat pump system units. The company was quick to troubleshoot the situation. The technicians were courteous, knowledgeable about the system and thorough. It required several visits to diagnose the problem and fix it. The manager, Nick was very responsive to the situation which required bringing out an expert from Mitsubishi. All of this work was covered under my warranty. The problem was fixed and I could not speak highly enough about the company’s policies and customer service. I would highly recommend them for all facets of their work and standing behind their installations. I am very happy to be working with them for my continued maintenance. They are an excellent company. Sincerely, Susan Coursey"
Response time10 hrs
47 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Surefire Mechanical Corporation
Surefire Mechanical Corporation
4.5(
157
)

Serving Sag Harbor, NY and surrounding areas

Approved

In business since 2013

Free estimates

Emergency services offered

"I sent a message to the company in the late evening regarding my broken central AC and Jason was here Tuesday morning to look at it. He tried to repair it but was not able to due to the age of the unit and the damage. We needed a new unit and he was here to put it in first thing Wednesday morning. Took him two hours and our AC was working. He was nice and professional. We felt the price was reasonable. Would use him again and recommend his business."
4 Zone Navien Boiler
1st Floor AC System
Hi Efficient Heat and Hot Water
Snow melt sensor
Manifold

+14

Response time10 mins
Recommended by97%of homeowners
Avatar for Long Island HVAC
Long Island HVAC
3.8(
6
)

Serving Sag Harbor, NY and surrounding areas

Approved

In business since 2012

Free estimates

Customers say: Quick response

"Ray was friendly and very professional and you can tell immediately that he was very customer oriented. As far as prices go, he was more than fair compared to the other bids. As a matter of fact I expanded the scope of his work to include a new water heater too. All the equipment supplied was 100% new, still in the factory cartons and the installation work was TOP QUALITY. Ray not only sold me the job but he did the installation too. He and partner Ken, and their assistant (3 man crew total) worked very professionally and effectively. Needless to say I HIGHLY RECOMMEND THEM."
 Fujitsu Ductless heat pump in a classroom
Service call for a system low on refrigerant
Solar powered attic exhaust fan
Recommended by66%of homeowners
Avatar for Pop Audio
Pop Audio
5.0(
21
)

Serving Sag Harbor, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Credit card accepted

"Pop Audio designed my home entertainment system to suit my needs and in turn, exceeded my expectations. He recommended quality blue tooth speakers throughout the main rooms of my home as well as a sound bar for my living room TV. All my devices flow in harmony with exceptional sound. Even though this much needed upgrade involved top notch devices, Kenneth was able to adapt my old record player to my new sound bar, reliving my nostalgic tunes with an amplified flare. Thank you a million times over! Highly recommend!"
Outdoor Television Install
Wall Mount TV w/Sonos Beam + Sub
Built in w/Wall Mount TV w/Sonos Beam
Nest Wired Cameras
24U Rack w/Sonos Amps

+4

Response time8 hrs
20 neighbors recently requested a quote
Recommended by84%of homeowners
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Showing 1-10 of 372

FAQs for furnace / forced air heating system install or replace projects in Sag Harbor, NY

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 Sag Harbor, NY 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.