Frequently Asked Questions
Answers, Straight From the Source
Honest answers to the questions Twin Cities homeowners ask us most, about air duct cleaning, dryer vents, heating and cooling, pricing, and working with our in-house team.
Air Ducts
Air Duct Cleaning
How to know when your ductwork needs attention, and what a thorough, NADCA-standard cleaning actually involves.
- How do I know if my air ducts need cleaning?
- Common signs include visible dust puffing from the vents, uneven airflow between rooms, musty or stale odors when the system runs, dust that returns quickly after you clean, and allergy or asthma symptoms that get worse indoors. If you've just finished a remodel, moved into an older home, or found evidence of moisture or pests in the ductwork, an inspection is worthwhile. Our technicians inspect first and only recommend cleaning when it will genuinely help.
- How often should air ducts be cleaned?
- For most Twin Cities homes, every three to five years is a reasonable interval, in line with NADCA guidance. Clean sooner if anyone in the home has allergies or asthma, if you have pets that shed heavily, after a renovation, or if the ducts have never been cleaned. Rather than pushing a fixed schedule, we give you an honest assessment based on what we actually find.
- What does professional air duct cleaning actually involve?
- We place the duct system under negative pressure with a powerful vacuum, then dislodge debris from the supply and return runs using brushes and compressed-air tools so it's captured at the source instead of scattered into your rooms. A thorough, NADCA-standard cleaning also addresses the registers, the blower, and the coil area. When we're finished, we walk you through exactly what was done.
- Does air duct cleaning really improve indoor air quality?
- Removing accumulated dust, dander, and debris from the ductwork reduces what gets recirculated through your home and helps the system breathe more freely. It isn't a cure-all, pairing a cleaning with fresh filters and, where it makes sense, dedicated indoor air quality equipment gives the best result. We'll tell you honestly what a cleaning will and won't do for your specific home.
- Do you clean commercial duct systems too?
- Yes. Alongside residential work, we service commercial HVAC and duct systems across the Twin Cities metro, scheduled around your operating hours to keep disruption to a minimum.
Dryer Vents
Dryer Vent Cleaning & Repair
Why dryer vents are a real fire-safety issue in Minnesota homes, and the warning signs worth acting on.
- Why does dryer vent cleaning matter?
- A clogged dryer vent is a genuine fire hazard, lint is highly combustible, and restricted airflow lets heat build up. A blocked vent also forces the dryer to work harder, so clothes take multiple cycles to dry and energy use climbs. Regular cleaning protects your home and extends the life of the appliance.
- How often should a dryer vent be cleaned?
- At least once a year for most households. Clean more often if you run frequent large loads, have a long or winding vent run, or share one dryer among a big family. If drying times are creeping up between cleanings, that's your cue to have it checked sooner.
- What are the warning signs of a clogged dryer vent?
- Watch for clothes that are still damp after a full cycle, a dryer that feels hot to the touch or shuts off on a thermal trip, a burning or musty smell, lint collecting around the exterior vent hood, and longer-than-usual drying times. If you notice any of these, stop running heavy loads until the vent is inspected.
- Do you repair dryer vents, or only clean them?
- We do both. If a vent run is crushed, disconnected, poorly routed, improperly terminated, or made of unsafe flexible foil, we can correct the routing and materials so the vent exhausts safely to the exterior the way it should.
Heating & Cooling
Heating, Cooling & Equipment
Straight answers on heat pumps in Minnesota winters, repair-vs-replace, sizing, and emergency service.
- Do heat pumps work in Minnesota winters?
- Modern cold-climate heat pumps are built to heat efficiently well below freezing, and many Twin Cities homes pair one with a backup furnace for the coldest stretches. Whether a heat pump is the right fit depends on your home, your ductwork, and your budget, we'll walk through the trade-offs honestly before you commit.
- Should I repair or replace my furnace or AC?
- As a rule of thumb, repair usually makes sense when the system is under about ten years old, the fix costs a fraction of replacement, and it's been reliable. Replacement starts to win when the unit is aging, repairs are stacking up, efficiency has dropped, or a major component fails. We give you the honest numbers both ways so the decision is yours, no scare tactics.
- What size heating and cooling system do I need?
- Correct sizing comes from a load calculation that accounts for your home's square footage, insulation, windows, and layout, not just a rule of thumb off the old unit. An oversized system short-cycles and wastes energy; an undersized one never keeps up. We size equipment to your actual home so it runs efficiently and comfortably.
- Do you offer emergency or same-day service?
- We're reachable 24 hours a day, seven days a week, and same-day service is available. Call (952) 254-8779 and we'll get you scheduled as quickly as possible.
- What areas do you serve?
- We serve homeowners across the Twin Cities metro, including Minneapolis, St. Paul, Savage, Eagan, and the surrounding suburbs. If you're not sure whether you're in range, just ask when you call.
Pricing & Plans
Pricing, Estimates, Financing & Plans
Transparent, upfront pricing, plus financing and a membership plan that make comfort easier to budget.
- Do you charge for estimates?
- We provide free written estimates. You'll receive a clear, itemized quote before any work begins, the price you approve is the price you pay, with no hidden fees or surprise add-ons.
- How does your pricing work?
- It's transparent and upfront. We diagnose accurately, explain what we find, and put a detailed written quote in front of you so you can make an informed decision. We don't manufacture problems or pressure you into work you don't need.
- Do you offer financing?
- Yes, through our partner Wisetack. You can check your options with no hard credit pull, choose from flexible plans (0% APR available for qualifying buyers), and pay over time. Applying takes only a few minutes, and all financing is subject to credit approval.
- Do you have a maintenance plan?
- Yes, the Gray Duct Healthy Home Club is $99 per year and includes priority scheduling, no trip charges during normal business hours, 15% off repairs and indoor-air-quality products, discounted seasonal tune-ups, and an annual loyalty credit toward new equipment. Your membership price is locked in for as long as you keep it.
- Do you offer any discounts?
- Yes, 10% off for active-duty and retired military members, and 10% off when you refer someone or coordinate a neighborhood group to have their systems cleaned. Just mention it when you call.
About Us
Working With Gray Duct
Who shows up, what we stand behind, and how to reach us safely.
- Are your technicians certified and in-house?
- Yes. Gray Duct is family-owned, and every technician is a certified, in-house employee, we never subcontract. The same team that answers your call is the crew that shows up at your door.
- Is Gray Duct licensed and insured?
- Yes, we're a licensed and fully insured Minnesota HVAC and air duct cleaning company, and a NADCA member for air duct cleaning work.
- How do I schedule service?
- Call (952) 254-8779, text us, or request service through our contact form and we'll follow up to confirm your appointment. We serve the Twin Cities metro seven days a week.
- How do I know it's really Gray Duct contacting me?
- For your security, only our owner and our office scheduler book appointments. If someone contacts you claiming to represent Gray Duct and you're unsure, don't share your information, call us directly at (952) 254-8779 to verify.
Still Have Questions?
We're Happy to Help
Can't find what you're looking for? Call our in-house team for an honest, no-pressure answer, or request service and we'll follow up to confirm.