Lower bills, warmer winters, cooler summers.
Denson finds exactly where your home is wasting energy — then fixes it. Audits, insulation, air sealing, and envelope work that pay you back every month, done by an engineer-led, BPI-trained team.
Find the waste. Fix it. Prove it.
We diagnose where your home loses energy, then handle the fixes that pay back fastest.
Home Energy Audits
A full diagnostic of where your home loses energy — so every dollar you spend fixing it counts.
Blower-Door Testing
We measure your home's actual air leakage instead of guessing, and verify the fix worked.
Insulation
Attic, wall, and floor insulation that keeps conditioned air where it belongs.
Air Sealing
Sealing the hidden gaps and bypasses that quietly drain heating and cooling all year.
Windows
Efficient window replacements that cut drafts and heat loss.
Roofing & Envelope
Roofing and envelope work that protects the building and its efficiency together.
You can't fix what you haven't measured.
Most 'energy upgrades' are guesswork — new windows here, some insulation there — without knowing where the home actually loses energy. That's how people spend real money and barely move their bills.
We start with a diagnostic audit and a blower-door test to find the true leaks, then prioritize the fixes that pay back fastest. And because this is weatherization work, federal, state, and utility programs often cover a significant share of the cost — we design with those programs in mind.
Getting a heat pump? Sealing the envelope first makes it work better — see HVAC & Heat Pumps.
Measure, fix, verify.
Diagnostic audit
A blower-door test and full assessment to find where energy actually escapes.
Prioritized plan
The highest-payback fixes first, mapped to any rebates and programs you qualify for.
Weatherization work
Insulation, air sealing, and envelope improvements, done to BPI standards.
Verified savings
We re-test to confirm the leaks are sealed and the work delivers.
Homeowners, landlords, and programs.
Government & Affordable Housing
Weatherization at scale for programs and public projects — certified and documented.
Affordable housing & government →Energy questions, answered.
Ready to stop heating the street?
Book an energy audit and find out exactly where your home is wasting money — and how to fix it.