Most Montgomery County homeowners never claim the rebates they're entitled to — because filing is a pain, and most contractors won't help. We do it automatically, on your behalf, as part of every install.
That's the maximum stackable rebate for a Signature-tier Navien install in Rockville — subtracted from your final price, not promised as "future savings you'll see on your bill."
These are the four rebates that stack for a natural-gas tankless install in 2026. Verified against current program documentation from each issuing agency.
Washington Gas offers money-saving rebates on ENERGY STAR certified tankless water heaters. For Maryland customers, rebates can be as high as $450 — applied directly to your contractor invoice or delivered as a check within 6–8 weeks.
Under the federal Energy Efficient Home Improvement Credit, homeowners can claim 30% of the project cost (unit + installation labor) on qualifying Energy Star certified gas tankless water heaters, up to a $600 annual cap.
Stackable manufacturer rebate on select Rinnai and Navien models for Maryland customers, valid on qualifying equipment purchases. Combines with the Washington Gas rebate for $550 in direct equipment savings.
Montgomery County homeowners are eligible for up to $250 in property tax credits for energy efficiency improvements including water heating upgrades. Applications processed in order received; annual program cap applies.
Here's exactly how the numbers played out for one of our March 2026 installs — a 4-bedroom colonial in Rockville 20852, Signature tier install with recirculation.
Most homeowners who claim rebates independently end up capturing one — usually the most obvious one. We file all four so nothing is left on the table.
Submitted on your behalf the day of install. Includes your utility account number, serial number, UEF rating, and approved-contractor signature. Check typically arrives in 6–8 weeks.
We file the manufacturer rebate through the Rinnai or Navien portal (depending on your unit) within 30 days. Tracking number provided to you. Rebate paid as check within 60 days of filing.
We provide a complete tax package: invoice, Energy Star certification, manufacturer QM code, and installation date documentation. Your CPA completes Form 5695 — no guesswork.
We prepare and submit Section 2 of the Dept. of Finance Energy Conservation Devices form on your behalf, including all required documentation of the installed equipment and approved code compliance.
If you're considering going all-electric or weatherizing your whole home, these Montgomery County programs may be a better fit than a gas tankless install. We'll tell you honestly if they are.
If you're willing to switch to all-electric, Pepco offers significant rebates on Energy Star certified heat pump water heaters. Best fit for homes converting away from gas or with basement space for the heat pump footprint.
BGE, Pepco, and Delmarva Power run a statewide electrification program offering up to $15,000 for homeowners switching from fossil fuels to heat pumps (HVAC or water heater). Requires energy audit first.
For income-eligible Maryland households, the Weatherization Assistance Program provides no-cost insulation, air sealing, and hot water heater improvements. Family of 4 qualifies under ~$94K household income.
Book a free consult and we'll confirm your exact eligibility for every rebate at your specific address. All paperwork handled by us — you just sign where indicated.