M MileHi HVAC
What we do

Heating, cooling, water heaters, and everything between.

Twelve services for residential and commercial customers across 23 cities in the Denver metro. Same-day service available. Free estimates before any work begins. Transparent, upfront pricing with no hidden charges.

4.9 stars · 325 reviews
Verified on Google
Same-day service
When you need us most
Free estimates
No surprise charges
5% off · Seniors & Veterans
Realtors: ask about pre-listing
Limited-time offer

Furnace certification, cleaning & service — $200

A complete furnace inspection, cleaning, and certification by a licensed technician. Catch the small issues before they become a January emergency. Realtors: ideal for pre-listing certification to help homes sell faster.

MileHi HVAC technician at work in Denver
01 · Heating

Furnaces, boilers & gas fireplaces.

When the Front Range turns cold, your heat needs to work the first time you ask for it. We install, certify, clean, and repair every kind of system Denver homes and businesses run on.

Book a heating visit
$200 special

Furnace Certification, Cleaning & Service

A full multi-point inspection and clean by a licensed technician, all-in for $200. Ideal for annual maintenance, pre-listing certification, and catching minor defects before they turn into an emergency call.

Schedule certification →

Heating Installation & Repair

Full system installs and on-the-spot repairs for every major brand of heating equipment. Residential and commercial. We size, source, install, and back the work.

Get an estimate →

Boiler Installation & Repair

Hydronic heat keeps Denver homes warm at altitude — and demands a technician who understands the system end-to-end. We install new boilers, replace failing ones, and repair noisy or under-performing units before the next cold snap.

Talk to a tech →

Gas Fireplace Service

Gas fireplaces look simple, but they need annual service to stay safe and efficient. We clean, inspect, and repair so your fireplace is ready for the first cold weekend of the season.

Book a service →
02 · Cooling

AC that keeps up with a Denver summer.

From a noisy condenser to a full system replacement, our technicians diagnose, repair, and install cooling systems for homes and businesses across the metro. Emergency service available when the temperature spikes.

MileHi HVAC cooling system service

AC Installation, Repair & Emergency Service

A noisy unit, a system that won't cool, or a complete swap — we install, repair, and run emergency calls on every brand of central air. Same-day service available on most weekdays.

Request service →

Seasonal AC Tune-Ups

Seasonal tune-ups boost efficiency, prevent breakdowns, and keep your cooling system running smoothly through the hottest weeks. The cheapest service call you'll book all year.

Schedule a tune-up →

Smart Thermostat Installation

Smart thermostat installation for effortless comfort control and improved energy efficiency in your home or business. We integrate it with your existing system, configure the app, and walk you through how to use it.

Add a smart thermostat →
03 · Water heaters

Five kinds. One team.

We install and repair every common water-heater configuration in the Denver metro, including modern tankless setups and replacements for manufactured homes. Don't neglect a noisy heater — it gets expensive fast.

  • Electric
  • Gas
  • Hybrid
  • Tankless
  • Manufactured home
Get a water-heater quote
Water heater install by MileHi HVAC
04 · Commercial

Built for restaurants, offices, and retail.

Commercial HVAC is its own discipline — and we've spent years on the roof, on the line, and in the basement keeping Denver businesses comfortable. From a single rooftop unit to a multi-zone retrofit, we handle the work end-to-end.

From a recent review

"We are new business owners of a restaurant and our a/c went out over a busy and hot weekend. They were able to come out first thing Monday morning to diagnose and repair our air conditioner. This is a commercial unit on top of our roof, so not an easy task."

— Mark Scarpelli, Google review

Commercial HVAC Installation & Maintenance

New builds, retrofits, planned maintenance, and emergency dispatch for commercial property owners. We work the way a property manager needs us to — predictable, documented, and on time.

Request a quote →

Rooftop Unit (RTU) Installation, Repair & Maintenance

RTUs are the workhorse of commercial cooling — and the most-ignored piece of equipment on the building. We install new units, replace failing ones, and keep working units on a maintenance schedule that prevents the next outage.

Talk about your building →
05 · Air quality

Cleaner ducts. Safer dryer. Better breathing.

The system that moves air through your building deserves the same care as the equipment that heats and cools it. We inspect, clean, and service the parts most homeowners forget about until they fail.

Schedule an inspection

Residential & Commercial Air Duct Cleaning

Professional duct cleaning for healthier indoor air, lower energy bills, and a system that runs quieter. Available for homes, restaurants, offices, and retail spaces.

Air Duct Inspection

Professional air duct inspection to ensure clean airflow, improve efficiency, and maintain a healthier indoor environment. A great starting point if you don't know when your ducts were last serviced.

Dryer Vent Cleaning

Clogged dryer vents are a top cause of household fires — and a top cause of laundry that takes two cycles to dry. A 30-minute service that pays for itself in efficiency alone.

How we work

No surprises, ever.

Every job we take on follows the same four steps. The estimate is free. The price you see is the price you pay.

  1. 01

    Call or request online

    Tell us what's wrong. We'll schedule a visit — same day on most weekdays.

  2. 02

    On-site diagnosis

    A licensed technician inspects the system, identifies the issue, and explains what's going on in plain language.

  3. 03

    Free upfront estimate

    You see the full price before any work begins. No hidden charges. Seniors and Veterans get 5% off — always.

  4. 04

    We do the work

    Clean, professional installation or repair, with a walkthrough of the equipment and how to keep it running.

Got a service in mind? Let's talk.

Free estimates. Same-day service available. Serving 23 cities across the Denver metro from our shop on South Broadway in Englewood.

This is a draft services page for MileHi HVAC — built by Glyph Sites.