Cooling Services

AC Tune-Up & Maintenance in Longmont, CO

A thorough spring tune-up catches the small stuff before it becomes a July breakdown. Loyalty Club members get theirs included every year.

23-Point Precision Tune-Up
Upfront Pricing
Family-Owned Since 1996
Limited Time Offer $155 AC Tune-Up + Water Heater Flush AC Clean & Tune-Up Water Heater Flush Included Upfront Pricing, No Surprises Same-Day Availability

Why a Spring AC Tune-Up Pays for Itself in Longmont

Your air conditioner sits idle through a Front Range winter, then gets asked to run hard the moment the first hot week arrives. Dust, cottonwood fluff and hard-water scale build up on the outdoor coil, capacitors weaken, and condensate drains clog. None of it shows up on the thermostat until the system quits on a hot afternoon.

A professional AC tune-up from M&M Heating, Cooling, Plumbing & Electrical resets all of that. Our NATE-certified technicians clean, test and adjust the system so it cools efficiently, runs quietly and lasts as long as the manufacturer intended. Regular maintenance also keeps most equipment warranties valid, which matters if a major component ever fails.

The easiest way to make sure it happens every year is our Loyalty Club Membership. For as low as $21.95 per month you get a 23-point A/C precision tune-up and cleaning each spring, a 27-point furnace tune-up each fall, discounts on all services and priority scheduling when the heat waves hit and every company in town is booked solid.

Family-owned in Longmont since 1996, we treat maintenance the way we would want it done on our own homes: thorough, honest and without a sales pitch. If we spot something that needs attention, we will show you, explain it and give you upfront pricing so you can decide. If your system is already struggling, start with AC repair instead. If it is near the end of its life, we will talk through replacement options honestly.

M&M technician performing an AC tune-up
What Is Included

Inside the 23-Point A/C Precision Tune-Up and Cleaning

A look at the major areas our technicians check, clean and adjust on every spring visit.

Outdoor Condenser Cleaning & Inspection

The outdoor unit takes the brunt of Longmont's dust, pollen and cottonwood seed. We clean the coil and clear debris so it can shed heat the way it was designed to.

  • Clean condenser coil and fins
  • Check fan motor and blade
  • Inspect pad level and clearance
  • Clear debris from the cabinet

Refrigerant & Operating Pressures

Correct refrigerant charge is the difference between a system that cools in minutes and one that runs all afternoon. We measure, compare to specs and flag any sign of a leak.

  • Test operating pressures
  • Check superheat and subcooling
  • Inspect line set insulation
  • Look for signs of leaks

Electrical Components

Weak capacitors and pitted contactors are the most common summer failures we see. Catching them in April beats replacing them on a holiday weekend.

  • Test capacitors and contactor
  • Tighten electrical connections
  • Check amp draw on motors
  • Inspect disconnect and wiring

Airflow, Filter & Blower

Restricted airflow makes the indoor coil freeze and the compressor struggle. We make sure air is moving the way it should through the whole system.

  • Check or replace the air filter
  • Inspect blower motor and wheel
  • Measure temperature split
  • Check ductwork at the air handler

Condensate Drain & Indoor Coil

Hard water and dust turn condensate lines into clog magnets. A clear drain prevents water damage and the musty smells that come with standing water.

  • Flush the condensate drain line
  • Inspect drain pan and pump
  • Check evaporator coil condition
  • Treat the line to slow algae growth

Thermostat & Controls

We confirm the thermostat is reading accurately and the system responds the way it should, then walk you through anything you should know before summer.

  • Calibrate the thermostat
  • Test start-up and shutdown cycle
  • Verify safety controls
  • Review findings with you
Why Homeowners Choose M&M

The M&M Difference

Maintenance done the way we would want it done on our own homes.

Maintenance That Happens Automatically

Loyalty Club members do not have to remember to call. We reach out each season to schedule your included tune-ups so nothing slips through the cracks.

NATE-Certified Technicians

A tune-up is only as good as the person doing it. Our licensed, insured and NATE-certified techs follow a documented checklist on every visit, on every brand.

No Upsell, Just Honest Findings

If your system is healthy, we will tell you so. If something needs attention, you get a plain-language explanation and upfront pricing, never pressure.

Family-Owned Since 1996

M&M has maintained cooling systems across Longmont and the Front Range for nearly 30 years, and we plan to be here for your next system too.

The M&M Family
How It Works

Our 4-Step Process

A tune-up visit is simple, tidy and does not take up your whole day.

1

Schedule Your Spring Visit

Book in early spring, before the heat arrives and before schedules fill. Loyalty Club members get priority placement.

2

Inspect, Clean and Test

Your technician works through the 23-point checklist, cleaning the outdoor coil, testing electrical parts, checking refrigerant and clearing the condensate drain.

3

Review the Findings

We show you what we found, what is in good shape and what, if anything, is worth addressing now versus watching. Pricing for any repair is upfront.

4

Enjoy a Worry-Free Summer

You get a system that cools efficiently, runs quietly and is far less likely to leave you sweating in July. We will see you again in the fall for the furnace.

4.9
★★★★★ 3,667 reviews
J R
2 weeks ago
★★★★★
M & M has been my go-to HVAC company since 2021, when they helped us choose and install a new furnace along with a complete heating and air conditioning system. The entire process was easy, and the new system made our home much more comfortable. Since then, they’ve been the only company I recommend to friends and family whenever they need heating, cooling work. It’s hard to find a company that’s consistently reliable, but M & M has always delivered. Their team is always prompt, communicates well, and keeps me updated by text/email throughout appointments, which I really appreciate. It’s the little things like that, combined with the quality of their work, that make them stand out. If you’re looking for an honest, dependable HVAC company that genuinely takes care of its customers I highly recommend M & M.
Sean Fitzgerald
3 weeks ago
★★★★★
Highly recommend M&M. I used them for both plumbing and electrical and experienced great customer service. The front desk was easy to work with for scheduling and payments. My plumbing technician David T. was excellent, communicating with me throughout the entire process and giving me the ability to weigh in on decisions that needed to be made. My electrical technician was Joey and he was fantastic. Extremely knowledgeable, easy to communicate with, and also continued to communicate throughout the entire job to make sure I was being included in decisions and able to give clarification when needed to make sure everything I needed done was being done. I could not recommend David and Joey highly enough!
Taylor Sarachek
a month ago
★★★★★
AJ and his trainee were fantastic. They were knowledgeable, gracious, respectful, and at the top of their game. They asked all the right questions, answered every one of mine, and took the time to explain my options without any pressure. I’ve only had pleasurable experiences with M&M, and this visit was no exception. If this is the standard they hold their team to, they’re doing it right. Highly recommend.
Read More Reviews

AC Tune-Up Questions from Longmont Homeowners

When is the best time for an AC tune-up in Longmont?

Early to mid spring, before the first stretch of hot weather. The outdoor temperature needs to be warm enough for the technician to run the system and take accurate refrigerant readings, but you want it done before summer demand fills the schedule. Loyalty Club members are scheduled automatically during that ideal window.

How often should my air conditioner be serviced?

Once a year is the industry standard, and most manufacturers require annual professional maintenance to keep the warranty in force. Front Range conditions, including dust, cottonwood season and hard water, make that yearly cleaning more important here than in milder climates.

What does the Loyalty Club include?

For as low as $21.95 per month, membership includes a 23-point A/C precision tune-up and cleaning each spring and a 27-point furnace precision tune-up and cleaning each fall, plus discounts on all of our services and priority scheduling. Deep cleaning services such as a blower pull and clean or indoor coil cleaning are quoted separately.

Can I just change the filter and hose off the outdoor unit myself?

Please do, and keep doing it. A clean filter and a debris-free condenser go a long way. What a homeowner cannot do is test capacitors, measure refrigerant charge, check amp draw or calibrate controls, and those are the items behind most mid-summer failures. Think of your part as the oil change and ours as the full inspection.

Will a tune-up lower my cooling bills?

A dirty coil, a low refrigerant charge or a weak capacitor all force the system to run longer to do the same job. Restoring the system to its design specs brings efficiency back to where it should be. We will not promise a specific percentage because every home is different, but a well-maintained system costs less to run than a neglected one.

Does the tune-up include the furnace too?

The spring visit focuses on the air conditioner. Loyalty Club membership also includes a 27-point furnace precision tune-up each fall, so both halves of your HVAC system get their own seasonal attention. See our furnace maintenance page for what that visit covers.

Beat the Heat. Schedule Your Spring AC Tune-Up.

Open 24/7  |  Emergency Service Available

Call (720) 608-3973
23-Point Precision Tune-Up
Loyalty Club From $21.95/mo
NATE-Certified Technicians
100% Satisfaction Guarantee

AC Maintenance Across the Front Range

Proudly serving Longmont, CO and surrounding communities from Erie and Frederick to Berthoud, Niwot, Lafayette and Louisville.

Primary Service Area

  • Longmont, CO
  • Erie, CO
  • Frederick, CO
  • Firestone, CO
  • Dacono, CO

Extended Area

  • Mead, CO
  • Johnstown, CO
  • Berthoud, CO
  • Niwot, CO
  • Gunbarrel, CO

Also Serving

  • Lafayette, CO
  • Louisville, CO
  • Superior, CO