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Mon–Fri: 7am–7pm | Sat: 8am–5pm1420 Nelson Road, Longmont, CO

Air Conditioning Services in Longmont, CO

Beat the Colorado heat with expert AC repair, installation, and maintenance. Same-day service available to keep your home cool and comfortable.

AC Experts

AC Repair, Installation & Tune-Ups

When summer temperatures climb in Boulder County, a reliable air conditioner is not a luxury — it is a necessity. Our technicians are trained on all major AC brands and can diagnose and fix problems fast, often on the first visit.

Same-Day AC Repair

Most repairs completed in a single visit. We stock common parts to minimize downtime.

Energy-Efficient Installations

High-SEER systems that lower your utility bills and qualify for rebates and tax credits.

Ductless Mini-Split Systems

Zone-based cooling without ductwork. Ideal for older homes, additions, and garages.

AC Maintenance Plans

Prevent breakdowns and extend system life with our annual cooling tune-up service.

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Air conditioning unit installation and repair in Longmont Colorado

Cooling Services We Offer

From quick fixes to complete system overhauls, we have your cooling needs covered.

Central AC Repair

Fast diagnosis and repair for all central air conditioning brands and models.

AC Installation

Properly sized, energy-efficient systems with professional installation and warranties.

Ductless Mini-Splits

Flexible, efficient cooling for homes without ductwork or for room-by-room comfort.

AC Tune-Ups

Annual maintenance to prevent breakdowns, improve efficiency, and extend equipment life.

Emergency AC Repair

24/7 emergency service with no after-hours fees. We respond fast when your AC fails.

Smart Thermostats

WiFi and programmable thermostats that save energy and give you remote control.

Smart thermostat installation for energy efficient cooling in Longmont
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Signs Your AC Needs Attention

Catching AC problems early can save you from a complete system failure on the hottest day of summer. Watch for these warning signs:

  • Weak airflow from vents
  • Warm air blowing instead of cool
  • Unusual noises or odors
  • Water leaks around the unit
  • System constantly running
  • High humidity indoors
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Stay Cool All Summer Long

Do not sweat through another hot day. Call Summit Heating & Air for fast, reliable cooling service.

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