Maryland pricing

Furnace Replacement Cost Calculator — Maryland

Estimate what a furnace replacement should cost by output, efficiency and venting work. Every figure below is already adjusted for Maryland labor and material pricing.

Model reviewed August 2026

Does furnace replacement cost cost more in Maryland?

+12% versus the national baseline

Installed prices in Maryland run about 12% above the national baseline. Permit fees are about 10% higher than the national average. Homeowner permits allowed on owner-occupied property.

Chesapeake Bay Critical Area rules add impervious-surface and buffer review to driveways, decks and additions within 1,000 feet of tidal water.

Compare with the national average furnace replacement cost calculator.

Heating output

Cost per 1,000 BTU installed($)

Efficiency

Venting changes

Old furnace removal

Permit fee($)

Estimated installed cost

$5,238 – $7,441

Furnace and labor: $5,376
Venting work: $0
Removal and permit: $577

Estimates only. Local pricing, site conditions and code requirements change the real number.

What changes the number in Maryland

Local cost indexAbove the national baseline	1.12x national
Permit fee index	1.10x national
Code basisStatewide code applies	Maryland Building Performance Standards, based on the IRC
Owner-builder posture	Homeowner permits allowed on owner-occupied property
Largest markets	Baltimore, Columbia, Silver Spring, Frederick

The formula

Cost = base unit cost x efficiency multiplier + venting + removal + permit

High-efficiency condensing furnaces (90%+ AFUE) need new PVC venting and a condensate drain, which is why the jump from 80% to 96% AFUE costs more than the equipment difference alone.

Covered markets in Maryland

City-level cost and permit pages with local building department links.

Baltimore, MD Columbia, MD Germantown, MD Silver Spring, MD Frederick, MD Rockville, MD Annapolis, MD

Frequently asked questions

How much is a new furnace installed?

Most homeowners pay $4,000 to $8,500 for a replacement gas furnace in 2026. Electric furnaces are cheaper to install but cost far more to run.

How long does a furnace last?

15 to 20 years for a gas furnace with annual service. Past year 15, repairs over about $1,500 usually favor replacement.

Sources

Sources & verification

Model vintage August 2026. The links above are the issuing agencies' own pages — we publish them so you can confirm the current rule yourself, not as evidence that each fact on this page was re-checked with them today. Cost figures are modeled estimates based on national baselines adjusted for local labor and material pricing, not quotes. Permit rules change; confirm with the building department before starting work.