What BTU size do most homes in Mercer Island need?

Typical homes here fall in a mid‑range BTU band, but you should size by a Manual J load calculation. Your installer should confirm.

What AFUE rating makes sense for Mercer Island, Washington?

Colder areas benefit from higher AFUE. Warmer areas can balance upfront cost and efficiency. Check gas rates and comfort goals.

Is two‑stage or variable‑speed worth it?

Two‑stage improves comfort and sound for most homes. Variable‑speed adds finer control and better humidity management.

Can I reuse my existing venting?

It depends on the new furnace’s category. Many high‑efficiency models require PVC sidewall venting. Confirm materials and code with your installer.

Do I need to match the furnace with my existing AC and coil?

Yes. Match airflow and coil to the furnace. If you plan to replace the AC soon, choose a furnace that supports the coming tonnage.

Are permits required for furnace replacement in Mercer Island?

Most jurisdictions require a permit and inspection. Installers typically pull the permit and handle scheduling.

Where do I find rebates and tax credits in Washington?

See our Washington rebates page, check DSIRE incentives, and review ENERGY STAR federal credits and IRS 25C details.

Wholesale Furnaces in Mercer Island, Washington

Q: How much do furnaces cost (equipment only) in Mercer Island, Washington?

Final price depends on BTU size and efficiency (single‑stage, two‑stage, variable). Installer labor is separate.

Why Buy Wholesale Furnaces Online In Mercer Island, Washington

We sell furnaces at wholesale prices and ship to your address in Mercer Island. No installation services. Checkout online and share the model number with your installer.

Climate & Sizing in Mercer Island, Washington

Mixed climate. Balance efficiency and comfort; dual‑fuel or a high‑efficiency gas furnace can both work well.

Estimated Furnace Prices (Equipment Only) in Washington

Typical range: $2,500–$4,800. Final cost varies by BTU size and efficiency (single-stage, two-stage, variable). Installer labor is separate.

Common BTU Sizes in Mercer Island

Most homes in Mercer Island fall in the 55k–95k BTU band, but proper sizing requires a load calculation. If you’re replacing AC as well, match the furnace with the coil and condenser.

Rebates & Credits in Mercer Island, Washington

https://furnace.guru/rebates/washington-furnace-rebates — state overview and utility guidance
https://programs.dsireusa.org/system/program/wa — DSIRE state incentives
https://www.energystar.gov/about/federal-tax-credits — ENERGY STAR federal credits
https://www.irs.gov/credits-deductions/energy-efficient-home-improvement-credit — IRS 25C details

Shipping to Mercer Island, Washington

Fast, free shipping on qualifying units to Mercer Island, Washington. Liftgate delivery available.

How To Buy in Mercer Island, Washington

Choose a model that meets your size and efficiency target.
Add to cart and checkout with your delivery address in Mercer Island.
Share the model number with your installer for hookup.

Frequently Asked Questions

Does Furnace Guru ship to Mercer Island, Washington and what qualifies for free shipping?

Yes. We ship directly to addresses in Mercer Island, Washington. Fast, free shipping applies to qualifying units and liftgate delivery is available at checkout.

What furnace size do most homes in Mercer Island need?

Many homes in Mercer Island fall in the 55k–95k BTU range, but you should size by a proper load calculation. Your installer can confirm final sizing before installation.

Do I need a permit for a furnace replacement in Mercer Island, Washington?

Most jurisdictions require a permit for HVAC equipment replacement. Your installer typically pulls it and schedules any inspections.

Are there rebates available in Washington?

Yes. Start with our Washington rebates page (https://furnace.guru/rebates/washington-furnace-rebates), and check DSIRE for current state and utility incentives (https://programs.dsireusa.org/system/program/wa). Federal tax credits may also apply.

Is a heat pump or a gas furnace better for Mercer Island, Washington?

Mixed climate. Balance efficiency and comfort; dual‑fuel or a high‑efficiency gas furnace can both work well. Compare utility rates and comfort preferences; dual‑fuel gives you both electric heating for mild days and gas for colder snaps.