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

Avatar for Palmer Gas & Oil
Palmer Gas & Oil
4.6(
88
)
Heat Pump - Install or ReplaceBoiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For Business+43 more

Serving Northwood, NH and surrounding areas

Approved

Super Service Award Winner

In business since 1932

Free estimates

Emergency services offered

"We have been a Palmer customer for 6 years. The front office and the technicians has always been great to work with. We have been using their AC and Heating Service Plan and on automatic oil and propane fill for years and we have never had an issue. My most recent experience was today for the AC Service Plan. The technician (David) was very polite, experienced, knowledgeable and respectful of our time and home. It’s always a great experience to have maintenance conducted in you home and have the technicians give you expert advice on your heating and AC system. Our AC system is well over 25 years old and still running strong thanks to Palmer. I continue to be impressed with Palmer and will remain a customer for the foreseeable future!"
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+11

3 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Freedom Air Mechanical
Freedom Air Mechanical
4.8(
14
)
Gas Furnace / Forced Air Heating System - InstallHeat Pump - Install or ReplaceBoiler or Radiator Heating System - Install or Replace+43 more

Serving Northwood, NH and surrounding areas

Approved

In business since 2021

Free estimates

Emergency services offered

"Incredibly responsive, prompt, and prepared. Shared extensive knowledge about our units and is easy to set up ongoing appointments for annual maintenance. We will be having Craig back to maintenance our furnace next. Thank you for the great communication and making it easy!"
Additional Photos
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+36

Response time1 day
5 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Action Plumbing Heating And Air
Action Plumbing Heating And Air
4.9(
92
)
Gas Furnace / Forced Air Heating System - RepairHeat Pump - Repair or ServiceDuctless Mini-split Heating System - Install or Replace+22 more

Serving Northwood, NH and surrounding areas

Approved

In business since 2022

Free estimates

Emergency services offered

"Mike & Chase came to do the annual maintenance that hadnâ t been done in over 5 years. They were efficient and careful working on this very old furnace. Mike was very informative- explained and answered all my many questions. Professional, efficient, thoughtful and polite. Iâ m scheduling them for my AC maintenance and plumbing needs. Trustworthy!"
Response time1 day
Response rate89%
21 neighbors recently requested a quote
Avatar for Kevin Russo HVAC
Kevin Russo HVAC
4.9(
70
)
Gas Furnace / Forced Air Heating System - RepairHeat Pump - Repair or ServiceThermostat - Repair or Reprogram

Serving Northwood, NH and surrounding areas

Approved

In business since 2000

Free estimates

Warranties offered

"Kevin was great. Our Central Air System died during a Heat Wave . When other companies told us they couldnâ t give us an appointment for two weeks, Kevin came the next morning and on a Holiday weekend. He was quick and reasonably priced. We would highly recommend Kevin Russo to anyone looking."
HVAC INSTALLS
Samsung
HVAC INSTALLS
York  condenser
HVAC INSTALLS

+2

Response time2 hrs
Response rate88%
Recommended by98%of homeowners
Avatar for Heritage Home Service
Heritage Home Service
4.5(
460
)
Gas Furnace / Forced Air Heating System - InstallOil Furnace / Forced Air Heating System - InstallHeat Pump - Install or Replace+7 more

Serving Northwood, NH and surrounding areas

Approved (Corporate)

In business since 1988

Free estimates

Emergency services offered

"He was very professional and made sure my furnace was running well after he cleaned it. He also made some other recconendations and I have signed a 2 year contact for service on my heating system because they had discounts and a payent plan that was very reasonable."
Generator Installation
Light Fixture Service
Oultet services
Indoor Outlet Service
HVAC Outdoor Unit

+16

Response time1 day
330 neighbors recently requested a quote
Recommended by95%of homeowners
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FAQs for furnace / forced air heating system install or replace projects in Northwood, NH

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 Northwood, NH 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.