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24/7 emergency HVAC service, we answer day or night

Same-Day
Diagnosis
& Repair

Gray Duct mascot, a friendly HVAC expert

Air Duct Cleaning · Dryer Vent Cleaning · Heating · Cooling · Air Quality

Your Twin Cities team for air duct cleaning, dryer vent cleaning, and indoor air quality, plus expert heating and cooling. Every job is done by our certified in-house crew with transparent, upfront pricing and same-day service.

Request Service Now(952) 254-8779

Starting August 1 – November 20, 2026

Wells Fargo 0% financing for 60 months

Special rate of 0% APR with 60 equal monthly payments on qualifying purchases with the Heil® credit card, issued by Wells Fargo Bank, N.A., an Equal Housing Lender. Subject to credit approval. Ask for details.

See financing options
Our Services

Air Duct Cleaning, Dryer Vent Care
& Complete Home Comfort

Air duct cleaning, dryer vent cleaning, and indoor air quality, plus expert heating and cooling. All performed by our certified, in-house technicians.

Air Duct Cleaning

Thorough duct cleaning to improve air quality and HVAC efficiency, removing dust and contaminants.

More About Air Duct Cleaning

Dryer Vent Cleaning

Reduce fire hazards, improve dryer efficiency, and extend the life of your dryer by removing lint buildup.

More About Dryer Vent Cleaning

Indoor Air Quality

UV air purifiers, whole-home humidifiers, and system fogging for cleaner air.

More About Indoor Air Quality

Heating & Furnace

Emergency repairs, maintenance, and high-efficiency installations for all furnace models.

More About Heating & Furnace

Cooling & AC

AC repair, condenser evaluation, maintenance, and new system installation.

More About Cooling & AC

Commercial HVAC

Reliable HVAC services for light commercial and commercial properties.

More About Commercial HVAC

New Construction

Design and install efficient, reliable HVAC systems for new construction projects.

More About New Construction
Explore All Services
Certified · Accredited · Trusted
Real Customer Reviews

Trusted by Homeowners Across the Twin Cities

With over 1,300+ five-star reviews (opens in new tab), our commitment to quality and integrity speaks for itself.

1,300+

Five-Star Reviews

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Transparent Pricing

What it costs in the Twin Cities

Honest, typical price ranges for our core services, so you can plan before you ever pick up the phone. Every home is different; the exact number always comes from a free, written estimate.

Transparent, upfront pricing. We hand you a written, itemized price before any work begins, no hidden fees, no surprises.

  • Air Duct Cleaning

    Whole-system NADCA source-removal, every supply & return, trunk lines, plus the blower and coil. Quoted flat after we see your system.

    See the full cost breakdown
    $300–$700+

    typical Twin Cities home

  • Dryer Vent Cleaning

    The full run cleared, dryer connection to exterior hood, with airflow verified afterward. CSIA C-DET certified. Longer or rooftop runs cost more.

    See the full cost breakdown
    $100–$200+

    standard, accessible run

  • AC Repair

    A clear diagnostic, then a written, itemized price before any work, repairs run from a small part to a major component, so we never guess a number sight-unseen.

    See the full cost breakdown
    Upfront quote

    after diagnosis

  • AC Replacement

    Matched condenser & coil, line set, electrical, permit and old-unit removal, sized with a real load calculation, never a like-for-like guess.

    See the full cost breakdown
    $5,000–$12,000+

    installed

  • Furnace Repair

    A combustion-safety check and diagnosis first, then a written price before we touch a thing, from a $35 ignitor to a control board, you see it in writing.

    See the full cost breakdown
    Upfront quote

    after diagnosis

  • Furnace Replacement

    Furnace sized to your heat load, venting, gas & electrical, permit and combustion-safety checks, high-efficiency (90%+ AFUE) options land higher.

    See the full cost breakdown
    $4,500–$10,000+

    installed

  • Heat Pump (installed)

    Ductless single-zone at the low end up to a whole-home cold-climate or dual-fuel system, Xcel rebates can bring the net cost down meaningfully.

    See the full cost breakdown
    $6,000–$18,000+

    before rebates

  • Tune-Up & Healthy Home Club™

    Priority scheduling, no normal-hours trip charges, 15% off repairs, a 2-year repair warranty, and spring A/C + fall furnace tune-ups at $89 each (50% off).

    $99/year
What moves your price up or down?

  • Size & capacity

    Bigger homes need more tonnage or BTUs, but bigger isn't better. We size with a load calculation so you don't overpay for capacity you'll never use.

  • Efficiency tier

    Higher SEER2 (cooling) or AFUE (heating), and two-stage or variable-speed equipment, cost more up front and less to run all season.

  • Your existing setup

    Old electrical, a mismatched coil, deteriorated line set, or ductwork and venting that need work all add labor and materials.

  • Cleaning scope

    For duct & dryer-vent cleaning: the number of vents and systems, length and routing of the run, and how much buildup is present.

  • Accessibility & rebates

    Tight or rooftop locations take longer; on the savings side, qualifying high-efficiency systems can earn Xcel or CenterPoint rebates.

Get a free, written estimate(952) 254-8779
Maintenance Plans

Protect Your Investment with Proactive Maintenance

Ensure your HVAC system runs efficiently and reliably year-round with our comprehensive maintenance plans.

Regular maintenance prevents costly breakdowns, extends the life of your equipment, and keeps your energy bills low. Our plans include seasonal tune-ups, priority service, and discounts on repairs.

Licensed & Insured
Over 1,300 Five-Star Reviews
Serving the Twin Cities Metro
Most Popular

Gray Duct Healthy Home Club™

Comfort, savings, and priority service, for one flat annual price.

$99/year
  • Priority scheduling
  • No trip charges during normal business hours
  • 15% off repairs
  • 15% off indoor air quality products
  • 2-year warranty on repairs we perform
  • $100 annual loyalty credit toward new HVAC (builds up to $1,000)
  • Spring A/C & fall furnace tune-ups, $89 each (50% off)
  • Transferable, with your price locked for life
Get a Quote
Special Offers

Exclusive Savings On Premium HVAC Services

Take advantage of our current offers for military members and referrals.

Special Offer

Free Written Estimate

Get a free, no-obligation written estimate on any installation or replacement, second opinions welcome. Transparent, upfront pricing with no hidden fees.

  • No hidden fees
  • Second opinions welcome
  • 24/7 emergency service
Claim Your Free Estimate(952) 254-8779

Mention this offer when you reach out. Estimates are free; your exact price always comes in writing before any work begins.

$0

No-Obligation Estimate

Written, itemized pricing, before any work begins.

Limited Offer

FREE

2nd Opinion On Any Replacement Quote

Ongoing offer, just mention it when you call

Gray Duct Technologies logo
Call Today(952) 254-8779
Limited Offer

10% OFF

For Retired and Active Military Members

Ongoing offer, just mention it when you call

Gray Duct Technologies logo
Call Today(952) 254-8779
Limited Offer

10% OFF

If You Refer Someone or Have a Neighborhood Group Who Wants Their Systems Cleaned

Ongoing offer, just mention it when you call

Gray Duct Technologies logo
Call Today(952) 254-8779
View All Promotions
About Us

A Family-Owned Business Built on Unwavering Integrity

Gray Duct Heating • Cooling • Air Duct Cleaning isn't just another HVAC company; we are your neighbors, committed to providing honest, expert service to the Twin Cities community.

Founded by Jason Giandalia, Gray Duct was created to counter the industry norm of hidden fees and unnecessary upsells. We are a local, family-owned and operated business dedicated to premium precision and transparent value. Our entire team is in-house and certified, ensuring every job is done right.

Learn More About Our Story
Aerial view of a Twin Cities metro downtown at dusk
Family-Owned

1,300+

Five-Star Reviews

100%

In-House, Certified Techs

$0

Upfront Written Estimates

Same-Day

Service Available

Unwavering Integrity

We diagnose with accuracy and prescribe with honesty.

Premium Precision

White-glove HVAC services that respect your property.

Transparent Value

Luxury service without hidden costs. Ever.

Our Process

A Higher Standard of Service, From Start to Finish

We believe in a transparent, respectful, and authoritative service process that puts you in control.

The proof is in the ductwork. Here is an actual Gray Duct air duct cleaning in a Twin Cities home, before and after, captured on the job.

A Twin Cities air duct shown before and after a Gray Duct cleaning: heavy dust and debris on the left, clean bare metal on the right.
Real Gray Duct results, an actual Twin Cities job

  1. You Call, We Answer

    Speak directly with our owner, Jason, or his assistant, Euco. No call centers, no runaround.

  2. Upfront Diagnosis & Pricing

    Our certified technician diagnoses the issue with precision and provides a clear, upfront price before any work begins.

  3. Expert In-House Service

    All work is performed by our own highly trained and certified team, ensuring the highest quality and accountability.

  4. Clean & Respectful Work

    We treat your home with the care it deserves, leaving our workspace cleaner than we found it.

  5. Final Walkthrough & Confirmation

    We review the completed work with you to ensure your total satisfaction and answer any questions.

How We Help

Solving Your Home’s Toughest HVAC & Air Quality Challenges

Five problems we solve every day across the Twin Cities, diagnosed honestly, priced upfront, and fixed by our own certified team.

Get a Free Estimate

  1. Resolve Urgent Issues

    When your furnace dies at midnight or your AC fails on the hottest day of the year, our 24/7 emergency response team is ready to restore your comfort fast.

  2. Improve System Efficiency

    Rising energy bills often point to an underperforming HVAC system. We diagnose hidden inefficiencies and tune your equipment to peak performance.

  3. Enhance Indoor Air Quality

    Dust, allergens, and contaminants circulate through dirty ductwork. Professional air duct cleaning removes buildup so your family breathes cleaner air.

  4. Plan for the Future

    Whether you need a new construction install or a full system replacement, we help you choose the right equipment and plan the project around your schedule and budget.

  5. Ensure Safety

    Clogged dryer vents are a leading cause of house fires. Regular dryer vent cleaning eliminates dangerous lint buildup and keeps your home safe.

Gray Duct Tip

Beware of Scammers

We have received reports of individuals impersonating Gray Duct Heating • Cooling • Air Duct Cleaning on Facebook, offering fake deals and attempting to collect payment. These accounts are not affiliated with us in any way.

How to verify a real appointment:

Only Jason Giandalia and his assistant, Euco, schedule appointments for Gray Duct. If anyone else contacts you claiming to represent us, please call us directly to confirm.

(952) 254-8779Read Our Scam Warning
Repair or Replace?

Should you fix it or replace it?

Answer five quick questions for an honest, no-pressure recommendation in under a minute , then decide what to do next.

Question 1 of 50%
Which system are you weighing?

So we tailor the guidance to how it actually ages.

This is a quick guide, not a diagnosis. Only an in-home inspection gives the real answer, and we'll always give you the honest call, not the expensive one.
Rebates & Savings

Twin Cities rebates & savings

Real Twin Cities HVAC savings stack, utility rebates, manufacturer and seasonal promotions, and financing. The figures below are current as of 2026 and pulled straight from each program's official source; amounts reset every year, so we confirm what applies to your install and help you file it.

Electric utility rebate

Xcel Energy

Up to $2,000, cold-climate heat pump

Savings

Xcel is the metro's main electric utility, and its rebates reward electric-side efficiency, with cold-climate heat pumps carrying the largest incentives as Minnesota pushes cold-climate electrification.

  • Cold-climate heat pumps, up to $2,000
  • High-efficiency central AC, up to $450
  • Smart thermostats, $50 + AC Rewards credit
  • + $600 insulation & air-sealing bonus

Current as of 2026 (Xcel's 2024–2026 MN residential program). Amounts vary by equipment efficiency and whether you're an electric-only or combo customer; eligibility applies. Source: xcelenergy.com

See if you qualifyLearn more about Xcel Energy
Gas utility rebate

CenterPoint Energy

Up to $1,000, 97%+ AFUE furnace

Savings

CenterPoint is the metro's primary natural-gas utility, so its rebates focus on gas equipment. As a rule of thumb, the higher a furnace's AFUE rating, the larger the rebate, topping out for 97%+ AFUE condensing furnaces.

  • High-efficiency gas furnaces, up to $1,000
  • Smart / Wi-Fi thermostats, up to $50
  • High-efficiency water heaters, up to $750

Current as of 2026 for equipment installed Jan 1–Dec 31, 2026. Furnace rebates step with AFUE ($200 at 92–95.9%, $400 at 96–96.9%, $1,000 at 97%+); MN gas customers only, eligibility applies. Source: centerpointenergy.com

See if you qualifyLearn more about CenterPoint Energy
Instant rebates + financing

Manufacturer & Seasonal Offers

Seasonal, changes through the year

Savings

Equipment brands we install (Heil and Goodman among them) run seasonal instant rebates and special financing that come and go through the year, plus our own promotions, including military and referral offers, and Wisetack financing with 0% APR on qualifying purchases.

  • Manufacturer seasonal promotions (Heil, Goodman, and more)
  • Military & referral offers
  • Wisetack financing, 0% APR available

Manufacturer and in-house promotions rotate by season and equipment line, ask us which offers are running on the system you're considering.

See current offersLearn more about Manufacturer & Seasonal Offers

We never quote a rebate we can't confirm. Tell us about your home and we'll map the qualifying equipment, the current rebates to verify, and financing, then help you file what you earn.

See if you qualify, free estimate(952) 254-8779
Financing

Flexible Financing Options To Fit Your Budget

Don't let budget concerns delay essential comfort and safety. We offer convenient financing through Wisetack and Wells Fargo.

Choose the option that fits you best: quick, no-hard-credit-pull prequalification with Wisetack, or a Wells Fargo credit line with special financing available on approved credit. Get the service you need now and pay over time with simple, transparent terms.

August 1 – November 20, 2026

Wells Fargo 0% financing for 60 months

Special rate of 0% APR with 60 equal monthly payments on qualifying purchases with the Heil® credit card, issued by Wells Fargo Bank, N.A., an Equal Housing Lender. Subject to credit approval. Ask us for details, or see financing options.

Wisetack

Affordable Comfort,
Simple Payments

Wisetack offers consumer-friendly financing with competitive rates and no prepayment penalties. Check your options in seconds without affecting your credit score.

Quick Pre-Qualification
No Hard Credit Pull
Flexible Payment Plans
Transparent Terms

0%

APR Available

On qualifying purchases

Plans from $50/mo

Second Financing Partner

Wells Fargo Financing

Buy today and pay over time with the Heil® credit card, which is issued with approved credit by Wells Fargo Bank, N.A. an Equal Housing Lender.

Heil® credit card, issued with approved credit by Wells Fargo Bank, N.A., an Equal Housing Lender — apply online

Click to Apply Online

With approved credit from Wells Fargo, you’ll enjoy:

Convenient monthly payments

Flexible financing options

Easy online account management

Plus, by taking advantage of financing, you won’t use up your existing funding sources, like a home equity line of credit, other credit card or bank account. They’ll still be available when you need them.

Please contact us to find out which financing options are available to you, or to learn about special financing promotions. Click the image to apply online.

Contact Us About FinancingCall to Apply

The Heil® credit card is issued by Wells Fargo Bank, N.A., an Equal Housing Lender. Special terms apply to qualifying purchases charged with approved credit. Ask for details.

How It Works

  1. Apply in Minutes

    Complete a quick online application through Wisetack, no hard credit pull to check your options. Get pre-qualified in seconds from the comfort of your home.

  2. Choose Your Plan

    Review multiple financing plans tailored to your budget. Choose the monthly payment and term length that works best for you, with transparent rates and no hidden fees.

  3. Get Your Service

    Once approved, we schedule and complete your HVAC service right away. Enjoy the comfort of a new system today while paying at your own pace.

Get Started TodayContact Us

All financing is subject to credit approval. Terms may vary. Loans made through Wisetack are issued by Hatch Bank.

Service Areas

Proudly Serving The Greater Twin Cities Metropolitan Core

47+

Cities & Suburbs Served

SavageMinneapolisSaint PaulBloomingtonEden PrairieEdinaPlymouthMaple GroveBrooklyn ParkBurnsvilleLakevilleWoodburyEaganRochesterSaint Louis ParkAlbert LeaApple ValleyChanhassenChaskaDeephavenElko New MarketExcelsiorFalcon HeightsFarmingtonGreenwoodHopkinsInver Grove HeightsLong LakeMaplewoodMendota HeightsMinnetonkaMinnetonka BeachMinnetristaMoundOronoOwatonnaPrior LakeRichfieldRosemountRosevilleShakopeeShorewoodSpring ParkVictoriaWaconiaWayzataWoodland
Gray Duct service area map, Twin Cities metro and surrounding regions
The Gray Duct Difference

Ready For A
Higher Standard
Of HVAC Service?

Experience the Gray Duct difference. Get an honest diagnosis, upfront pricing, and expert service from our in-house team.

Call us directly at (952) 254-8779 to speak with our team, or fill out our form to request your service appointment online.

Request Service Now(952) 254-8779
Licensed & Fully Insured
NADCA Certified
Same-Day Service Available
Upfront Honest Pricing