How to save on furnace installation in 2026
A new furnace is one of the bigger home expenses most homeowners face. Eight proven tactics that consistently knock $500 to $3,000+ off the bill, plus the honest truth about what tax credits and rebates actually exist in 2026 (the federal credit expired).
Eight tactics, ranked by leverage
Roughly in order of dollar impact for the typical homeowner. Every situation is different, but these consistently move the price.
Install in spring or early fall
Contractors are between busy seasons. Crews need work. Negotiating leverage is highest. Manufacturer promos often run in March-May and September-October.
Get 3+ quotes (with model numbers)
Same brand and AFUE, three contractors, and prices typically vary 25-35%. Without model numbers, you cannot compare apples to apples and contractors know it.
Right-size the unit
Old-school contractors over-size by 25-50%. A proper Manual J load calculation often reveals you need a smaller (cheaper) furnace than initial quotes suggest.
Two-stage instead of variable-speed
Two-stage captures most of the comfort and efficiency gain at half the premium. Variable-speed is justified mainly for cold climates with long stays.
Skip the brand premium
Goodman, Heil, and Rheem at the same AFUE deliver near-identical performance to Carrier or Lennox. The premium buys quieter blowers and longer warranties, not more heat.
State and utility rebates
Most utilities offer $100-$500 rebates on 95%+ AFUE furnaces. Check the DSIRE database (dsireusa.org) for your state. Forms are easy. Submit within 60-90 days of install.
Manufacturer seasonal promos
Carrier (Cool Cash up to $1,650), Lennox (up to $1,200), Trane (up to $1,000), Rheem (up to $1,000). Promotions run spring and fall. Ask your contractor what is active.
0% financing instead of HVAC card
Many contractors offer 0% for 12-18 months through Synchrony or Wells Fargo. Avoid HVAC store credit cards (12-18% APR after introductory period).
The truth about 2026 tax credits
Section 25C expired December 31, 2025
The federal Energy Efficient Home Improvement Credit, which gave $600 for 95%+ AFUE gas furnaces and oil furnaces, expired at the end of 2025 along with the broader Inflation Reduction Act consumer tax credits. There is no federal tax credit for gas, electric, or oil furnaces installed in 2026. Be sceptical of any contractor or website that claims otherwise, they are working from outdated information.
What is still available
State and utility rebates ($100-$500)
Most utilities offer rebates for 95%+ AFUE gas furnaces. Check DSIRE for your state. Programs change, but high-efficiency rebates have been stable for a decade.
HEEHRA heat pump rebates ($2,000-$10,000)
If you are open to a heat pump instead of a furnace, the Home Electrification and Appliance Rebates program is running in many states for income-qualified households. Point-of-sale, no tax-return paperwork.
Manufacturer rebates ($500-$1,650)
Carrier Cool Cash, Lennox Comfort Match, Trane Trade-Up. Run seasonally, usually spring (March-May) and fall (September-October). Your contractor knows what is active.
Local gas utility weatherization programs
Many gas utilities offer free or subsidised home energy audits and discounted insulation/air sealing. Cuts your heating load before you size the new furnace, which can drop you a stock size.
Avoid these false economies
- ×Skipping the permit. Save $200, void warranty + insurance, and create a future headache when you sell.
- ×Cheapest unbranded furnace. Saves $500 today, no parts availability in 10 years.
- ×DIY install on gas. Illegal in every state, voids warranty, creates carbon monoxide and gas leak liability.
- ×Skipping ductwork repairs. A new furnace pushing into leaky ducts loses 20-30% of its heat to the attic or crawlspace.