Furnaces & heat pumps
Diagnostics, repairs, seasonal maintenance, safety checks, and replacement guidance for dependable winter heat.
Local heating & cooling
Comfort without the runaround.
Straight answers, careful workmanship, and heating and cooling service built around what your home actually needs. Serving Broomfield, Boulder, and nearby communities.
Locally ownedYour neighborhood HVAC partner
Repair-first guidanceOptions explained clearly
Residential & light commercialPractical service for real spaces
Xcel trade partner listingServing Colorado customers
What we do
Built for Colorado
weather.
From no-heat calls to summer cooling problems, Sundown diagnoses the system, explains the options, and helps you choose the right path forward.
Air conditioning
Cooling repairs, tune-ups, airflow troubleshooting, equipment replacement, and comfort improvements.
Fireplace service
Maintenance, diagnosis, and repair support to keep gas fireplaces operating safely and reliably.
Mini-split systems
Service, cleaning, and maintenance for ductless systems—from a single zone to multi-head home setups.
Humidifiers & filtration
Whole-home humidity, filtration, and indoor air quality solutions sized to your home and your goals.
Airflow & system care
Coil cleaning, filter service, performance checks, and practical fixes that help equipment run the way it should.
“Thorough, dependable, and willing to explain what’s actually going on.”What local neighbors value about Sundown
A better service call
Know what’s wrong. Know what comes next.
01
Clear diagnosis
The issue and your options are explained in plain language before work moves forward.
02
No manufactured pressure
Recommendations are based on the condition of the system—not a sales quota.
03
Work that respects your home
Careful service, attention to detail, and a clean finish are part of the job.
04
A local relationship
You can call or text the person responsible for your comfort and get a straight response.
Sundown Comfort Club
Stay ready.
Spend smarter.
Preventive care catches small problems earlier, keeps filters and coils in better shape, and makes seasonal changeovers easier.
✓ Two seasonal visits✓ Filter replacement✓ Basic cleaning & checks✓ Maintenance history
Ask about membershipResidential Comfort Club
$19/month
A simple maintenance plan for one standard residential HVAC system.
Mini-Split Care
$19/month + $8 per additional head
$19/month + $8 per additional head
Request service
Let’s get your comfort back.
Tell us what the system is doing and the best way to reach you. For the fastest response, call or text directly.
Call or text817-550-1729
ServiceResidential & light commercial HVAC
Primary service areaBroomfield, Boulder & surrounding areas