Stop losing 20-30% of your conditioned air. We design and install duct systems with a 4% leakage guarantee — backed by a Lifetime Craftsmanship Warranty.
Serving Richmond, Midlothian, Henrico, Chesterfield & surrounding areas
Most homes lose 20-30% of their heated and cooled air through leaky, poorly designed ductwork. That means higher energy bills, uneven temperatures, and an HVAC system working harder than it should.
At DNA Heating & Cooling, we offer both duct sealing and full duct replacement — and we'll recommend the right approach based on your system's condition. Sometimes sealing is enough. Sometimes replacement is the smarter long-term investment. Either way, every project is tested and verified, not guessed at. And we back our work with a Lifetime Craftsmanship Warranty.
Not sure if your ducts are the problem? Here are the most common signs Richmond homeowners notice:
Some rooms are too hot, others too cold — no matter how you set the thermostat.
Your system runs constantly but your home never feels comfortable.
Leaky ducts pull dust, insulation particles, and allergens from attics and crawl spaces into your living areas.
Popping, rattling, or whistling sounds when your system runs.
Crushed flex duct, disconnected sections, or ductwork that's 15+ years old.
That one room that's always uncomfortable — often a sign of undersized or poorly routed ducts.
Not sure what you need? Schedule a free estimate and we'll assess your system.
Get a Free EstimateYour HVAC system is only as good as the ducts delivering the air. Even a brand-new, high-efficiency system will underperform if the ductwork is leaky, undersized, or poorly designed.
We don't guess — we measure, assess, and verify. Whether you need sealing or full replacement, here's how we approach every duct project:
We inspect your existing ductwork and identify problems — leaks, damage, improper sizing, poor routing. If needed, we perform duct leakage testing to measure exactly how much air you're losing. Based on what we find, we'll recommend sealing, partial replacement, or full replacement.
For sealing projects, we map out every leak and connection that needs attention. For replacement projects, we design a duct system sized to your home's actual needs. Proper sizing means balanced airflow, consistent comfort, and maximum efficiency.
For sealing, we systematically seal every joint, connection, and leak point in your existing ductwork. For replacement, our team installs your new ductwork using quality materials — including R-8 insulated ducts to prevent energy loss. Every connection is sealed, every run is supported properly.
We don't assume it's right — we prove it. After the work is complete, we test the system to verify airflow and confirm duct leakage is at or below 4%. You get documentation, not just promises.
Every home is different, and costs depend on whether you need sealing, partial replacement, or full replacement. Here's what affects pricing — and how we make the investment manageable.
Duct sealing is typically less expensive than full replacement — it's a good option when your existing ducts are structurally sound but leaking at joints and connections. Full replacement makes more sense when ducts are damaged, undersized, poorly routed, or past their useful life. We'll assess your system and give you an honest recommendation on which approach delivers the best value.
We don't believe in surprises. After assessing your home, you'll receive a written estimate with clear pricing — no hidden fees, no pressure. You'll know exactly what you're paying for before any work begins.
We offer financing through WiseTack to make your duct project more manageable. Plans include up to 12 months with no interest, and other terms are available depending on your needs. A financing link is included with every estimate — apply online in minutes.
Duct leakage testing, airflow verification, pressure diagnostics — we measure and prove performance, not guess at it.
Most contractors don't test. We guarantee 4% leakage or less on every duct system we install — verified with testing.
We stand behind our work for as long as you own your home. Period.
Direct oversight on every job. No rotating crews showing up unannounced. Just consistent, expert work from a team that treats your home like our own.
DNA Heating & Cooling provides duct sealing and replacement services throughout the Richmond metro area, including:
Not sure if we serve your area? Give us a call — we're happy to help.
Stop losing conditioned air and money. Schedule a free estimate and find out what properly designed ductwork can do for your home.
