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M and M Heating, Cooling, Plumbing and Electrical

Longmont, CO
4.9(3365 reviews)
RESPONSE

Fast Response

Reviewers confirm quick response

EMERGENCY

24/7 Verified

Confirmed by reviews

PRICING

Budget-Friendly

Fair Pricing ✓

RED FLAGS

None Found ✓

No significant concerns in reviews

Trust Score: 0/100 · Based on 3365 reviews

Top pickTop pick
4.9Google

Our Verdict

Strong Hire

#2 of 17 in Longmont, CO

Best for
  • Emergency and same-day calls
  • Budget-conscious homeowners
  • Water heater install/repair
Avoid if

No major caveats

Hire if: You need fast same-day or after-hours response

Hire if: You need a plumber who actually shows up when scheduled

Caution if: You need rock-bottom prices with zero flexibility on the quote

Caution if: You need warranty-grade work on a complex or high-stakes install

How they score across what matters

Based on 5 reviews analyzed. Click a row for the quote that best illustrates the score.

What they do well (and don’t)

Green means reviews confirm they’re good at it. Red means reviewers flag issues. Gray means no reviews talk about it yet.

What 3365 Reviews Tell Us

Emergency Response

fast_response cited in 3 of 5 analyzed reviews; same-day inspection for dual water heater failure and 24-hour furnace diagnosis-to-install documented.

Emergency and same-day calls

What To Watch Out For

Not enough data to identify weaknesses

Pricing

Competitive bidding: beat 4 other companies on price and warranty for a high-efficiency combi-boiler; master plumber's estimate described as 'much more reasonable than other companies.'

Fast ResponderFair Pricing24/7 Verified by Reviews

Customer reviews

Reviews from Google, Yelp & more

A
Alison Mosher

We had both our water heaters go out on the same day. M&M came out immediately to inspect situation and got us scheduled for earliest replacement. The team was professional, communicated well and updated me on the process. We went with the tankless heater and couldn’t be more pleased. I highly recommend them!

L
lee robinson

Jim, their master plumber, came out to look at the shower valve that needed replacement and write up a quote. He came across as knowledgeable and trustworthy and gave a much more reasonable estimate than other companies. He came on time and their company scheduling system worked well. Blake came out to do the shower valve replacement soon after and was also excellent. Glad to have a company that I can use again for any future issues.

J
jesse pleiman

There’s no experience quite like having your furnace call it quits during winter, but because of companies like M & M Heating, cooling, and plumbing this problem was examined, addressed, and fixed all in 24 hrs! From the first inspection and diagnosis with Cody to meeting Tanner and Matt the next day with my new furnace for installation, all the customer service was top notch! They were all calm and respectful and very informative. I would highly recommend this company to any in Noco!

K
Karl Moeller

I purchased a house with ancient HVAC and water heater systems that barely passed home inspection. I knew they would need replacement and hoped they would make it through the winter… But that didn't turn out to be the case. M&M came recommended by several neighbors. When I called M&M to have a technician come and assess my system it turned out that the prior owner had also used them to run a new sewer line to the street a few years before - and they had all those records. They came, offered several options, answered all my questions - and helped me think through plans/price options for future upgrades that would build on a new system over the next few years - solving more than the immediate problems of today. At the same time, I was getting ready to add a TV room to my unfinished basement, but the electrical work I inherited in the basement was not up to code. Their electricians were able to come the same day as the HVAC crew, fixing everything and bringing it all up to snuff. While they originally scheduled the work over two days, it's the end of the first day and everything is finished. So many trucks and guys showed up this morning that my neighbor actually called asking if everything was OK. There were eight or so guys in gray shirts running around working their butts off - and I think at one point there were four vans on the street. The neighbors thought I was having an emergency!! Everyone that works for the company was super nice and incredibly professional.

D
Dan Firepine

I chose MandM for a large heating system replacement because they were always clear and responsive during the bidding process which made me feel comfortable and confident. The two day installation was efficient, they were respective, cleaned-up, explained everything and answered all my questions. My new high-efficiency combi-boiler is a piece of art and the company's price and warranty on parts and service were the best of 5 companies I met with. I unequivocally would recommend them and give a shout-out to Cody

Business details

Phone
(720) 915-8146
Address
110 S Bowen Cir, Longmont, CO 80501, USA
Hours
Open 24 hours

Service area

Based in Longmont. Serves 12 nearby cities within 20 miles:

Last updated June 25, 2026 · Data from Google Reviews
0

M and M Heating, Cooling, Plumbing and Electrical

4.9$
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