Furnace Installation near you

The fuel a house already has usually decides the furnace, because the meter, tank or electrical service is the expensive part to change. What varies within a fuel is how the furnace burns and vents, and that is what determines whether the installation is a straight swap or a larger job.

Furnaces are rated by AFUE, annual fuel utilization efficiency, which expresses how much of the fuel's energy becomes usable heat in the home over a heating season rather than leaving through the vent. ENERGY STAR sets its bar above the federal floor and splits it by region: a certified gas furnace needs a rating of 95 percent AFUE or greater in the US South and 97 percent AFUE or greater in the US North, a certified oil furnace needs 87 percent AFUE or greater, and either one must also have air leakage of 2.0 percent or less.

The federal floor itself is moving. The Department of Energy last updated the furnace standard in 2007, and on December 18, 2023 it finalized an amended standard requiring non-weatherized gas furnaces and gas furnaces used in mobile homes to reach an annual fuel utilization efficiency of at least 95 percent. Manufacturers must comply on and after December 18, 2028. DOE describes that level as readily achievable by condensing furnaces, which use a secondary heat exchanger to capture heat from the exhaust gases that a conventional furnace sends up the flue. Separately, DOE determined in 2024 that the standards for electric furnaces, oil furnaces and weatherized gas furnaces did not need to be amended.

That has a practical consequence on installation day. Because a condensing furnace pulls so much heat out of its exhaust, the flue gas is cool enough to vent through plastic pipe out a sidewall, and the water that condenses out of it is acidic and needs a drain. If your old furnace shared a masonry chimney with a water heater, moving the furnace off that chimney leaves the water heater venting alone into a flue sized for two appliances, and the installer has to confirm the remaining appliance still vents properly. Ask how that is being handled before the work starts, not after.

A good installation starts with a measurement of the house, not of the old furnace. DOE's guidance for federal buyers makes the point bluntly: an efficient furnace will not save energy or money if it is not properly installed, and it directs buyers to require installation in line with the ANSI/ACCA HVAC Quality Installation Specification, which exists precisely to address oversizing and duct leakage. Square footage, insulation levels, window area, air tightness and the local design temperature drive the answer. Copying the capacity of a furnace installed decades ago simply carries forward whatever was wrong then.

The install itself runs in a predictable order: gas and power off, the old unit disconnected and removed, the new furnace set and leveled, sheet metal transitions made to the existing plenum and return, gas piping connected and leak-tested, the vent run and terminated at the correct clearances, the condensate drain piped and trapped on a high-efficiency model, the electrical circuit and disconnect made up, and the thermostat wired and configured. Duct sealing and any return-air correction are best done while the equipment is out of the way rather than as a later visit.

Commissioning is the part homeowners never see and should ask about anyway. The technician should verify gas pressure, measure the temperature rise across the heat exchanger and confirm it falls inside the range printed on the nameplate, check external static pressure to see whether the ducts can actually move the air the blower is trying to push, and test the safety controls. Ask for those startup numbers in writing, along with the model and serial numbers on the invoice. They are the baseline a future technician will compare against.

Any appliance that burns fuel can produce carbon monoxide when it is damaged, poorly vented or short of combustion air. The Consumer Product Safety Commission reports that more than 200 people a year die in the United States from unintentional non-fire carbon monoxide poisoning associated with consumer products, and it urges a yearly professional inspection of all fuel-burning home heating systems, covering furnaces, boilers, fireplaces, wood stoves and water heaters along with the chimneys, flues and vents that serve them.

A sealed-combustion furnace takes its combustion air from outdoors through a dedicated pipe instead of from the room. DOE recommends that design for exactly this reason: it keeps indoor air out of the burner and reduces the risk of exhaust gases backdrafting into occupied space. If a new furnace is going into a tight utility closet, a finished basement or a space shared with a water heater and a dryer, combustion air is a question worth raising with the contractor at the quote stage.

There is no national contractor license in the United States, and heating work is regulated state by state. In Texas, the Department of Licensing and Regulation states that contractors who install, repair or maintain systems related to air conditioning, refrigeration or heating must hold a TDLR license, and that an air conditioning and refrigeration company must employ a licensed ACR contractor at each permanent location. In California, the Contractors State License Board issues a C-20 Warm-Air Heating, Ventilating and Air-Conditioning Contractor classification for this work. Other states run heating under a mechanical or general contractor board, and some leave it to cities, so look up your own state's board and confirm the license before anyone starts.

Permits are usually a city matter and they vary more than people expect. Minneapolis states that most heating, air conditioning, ventilation, refrigeration and gas piping work requires a permit, issued to city-licensed mechanical and heating contractors, with on-site inspections after work begins. Seattle issues a mechanical permit for HVAC equipment and requires separate permits for gas piping, refrigeration and boiler pressure vessels, then requires you to schedule the inspection. Ask directly who is pulling the permit, whether its cost is inside the quote, and who meets the inspector.

Underneath the permit sits a model code adopted locally. The International Code Council reports that its International Residential Code is in use or adopted in 49 states, the District of Columbia, Guam, Puerto Rico and the US Virgin Islands, and notes that jurisdictions often amend a model code as they adopt it to reflect local practice and law. That is why a venting or clearance detail accepted in one city is corrected in the next one over. An unpermitted furnace also tends to resurface at resale, when an inspector or a buyer's agent asks for the paperwork that was never filed.

The federal incentive most homeowners heard about was the Energy Efficient Home Improvement Credit under section 25C. The IRS describes it as equal to 30 percent of certain qualified expenses, with natural gas, propane and oil furnaces and hot water boilers qualifying when they meet the specified efficiency standards, for property placed in service on or after January 1, 2023 and before December 31, 2025, and it notes the credit terminates after 2025 and that items claimed for 2025 had to come from a qualified manufacturer with the manufacturer's identification number reported on the return. That window has closed, so check the IRS page for the credit's current status rather than assuming it still applies.

Two other channels are still worth working. The Inflation Reduction Act funded two Home Energy Rebates programs, the whole-home HOMES program and the electrification-focused HEEHR program; the Department of Energy provides the money and oversight while states, territories and Tribes run the programs, and DOE tells homeowners to contact their State or Territory Energy Office for status and eligibility, because the rebates are live only in some states. Locally, ENERGY STAR's Rebate Finder takes a ZIP code and returns rebates and special offers near you, and your own gas or electric utility's site is worth checking directly. Most of these programs require certified equipment and a licensed installer, and many require approval before the work is done, so confirm the rules before you sign anything.

A furnace carries two separate promises and homeowners routinely confuse them. The manufacturer warrants the parts, with the heat exchanger usually covered for far longer than everything else. The contractor warrants the labor, and that term is entirely theirs to set. A failed part under a parts warranty can still produce a bill for the visit, the diagnosis and the labor to install it, so ask what each one covers and for how long before you choose between quotes.

Read the warranty document that ships with the equipment rather than the brochure. Manufacturers commonly set a registration deadline measured in weeks from the installation date and shorten the coverage sharply if it passes, and many condition coverage on professional installation and on documented annual maintenance. Register the furnace yourself if the contractor does not, keep the invoice with the model and serial numbers, and file the startup readings and every service record with it.