M&M Mechanical Services
Company Overview
For all your heating, air conditioning, commercial refrigeration, plumbing, and sheet metal fabrication needs, trust the dependable team at M&M Mechanical in the Big Bear Lake, CA region.
Mike founded M&M Mechanical in 1990 and is a self-taught HVAC-R technician. After 25 years as the sole owner and operator of M&M Mechanical, Mike acquired Big Bear Sheet Metal Plumbing & Heating in October 2015. Currently, M&M Mechanical Services, Inc. DBA Big Bear Sheet Metal operates with a crew of 5 qualified employees, ready to support clients in the Big Bear Valley.
Business Services
- Bathtub installation
- Bathtub repair
- Faucet installation
- Faucet repair
- Garbage disposal installation
- Garbage disposal repair
- Gas line installation
- Gas line repair
- Hot water recirculation pump installation
- Hot water recirculation pump repair
- HVAC installation or replacement
- HVAC system repair
- HVAC system maintenance
- Plumbing inspection
- Plumbing installation or replacement
- Plumbing repair
- Shower installation
- Shower repair
- Sink installation
- Sink repair
- Toilet installation
- Toilet repair
- Water heater installation
- Water heater repair
- Water pipe installation
- Water pipe repair
Business Location & Hours
Mon: | 8:00 AM - 4:30 PM |
Tue: | 8:00 AM - 4:30 PM |
Wed: | 8:00 AM - 4:30 PM |
Thu: | 8:00 AM - 4:30 PM |
Fri: | 8:00 AM - 4:30 PM |
Sat: | Closed |
Sun: | Closed |
Recommended Customer Reviews

I called M & M because our heater wasn't working at our vacation home, and my Nest thermostat was offline. I started to panic because I could see the temperature dropping indoors. Dean called me right back and was able to get someone out within an hour. They diagnosed the problem and fixed it for a fair price. I am so appreciative of their quick & reliable service, they saved us a trip up the mountain to troubleshoot and I would absolutely call them again for service!

New Heater in 1 Day!
We have been having problems with our old heater. We called M&M and they came right out to diagnose the heater. It was toast. There was no charge for the diagnosis. They checked their inventory and got us a price within 2 hours. They were able to get started the same day. By noon the next day, we had heat. I forgot to mention it is in the middle of winter so we were delighted.
We want to express our gratitude for the excellent customer service and workmanship. Thanks again.

I highly recommend M&M. Outstanding service, communication and quality work. They replaced my furnace per estimate and even fixed some ""unknown quality ducting"" at less than expected cost. The initial inspection was thorough and helped me prepare for the installation which was on time and completed in a single visit. Fantastic!

M&M has given us outstanding service for routine maintenance and an ill-timed emergency alike. They are locally owned and operated and the best kind of small business to support and entrust with your equipment. Full service operation from new construction to maintenance, repair and upgrades. Highly recommend.

I requested a call at 9 am. They called and set an appointment for 11. They were here on time and found the issue with my wall heater and fixed it. I'm very happy that they came out today as it's the day before thanksgiving. Highly recommend

Tim and his crew are literally incredible and most professionals! They are super honest and highly proficient. They came the same day and were able to easily fix our AC condenser unit problem, with very detailed and thorough diagnosis and service that they provided on the spot. Their customer service is excellent and above and beyond. I highly recommend Tim and this company, very trustworthy and super professional!

From now on this is the contractor I will use for my heater repairs going forward. Dean and his partner quickly diagnosed the problem and got my heater and fan up and running again. He also found WHY the issue of a burned out transformer occurred and fixed that as well. It was clear to me that the issue had occurred due to the previous contractor's mistake. Dean also installed a fuse to prevent a possible transformer melt down in the future. I was very impressed with his skill, expertise, and professionalism. I highly recommend this company.

I had a guest blow out my electrical and it ended up blowing out my pilot light on my wall heater. This happened in winter! So I was freezing I tried turning the pilot light on myself but the button wouldn't work. I called them and someone was out that same day. They then came back the next day to replace the part that was failing. I would recommend them to anyone looking for someone professional, reliable, and communicative. I'm a happy customer.

My wall heater started to sound like a garbage disposal. I called M&M, who was recommended by my electrician, and they scheduled someone to come out that day. They diagnosed/fixed it in less than an hour and it sounds better than ever! Happy customer.

I called M&M mechanical to get an appointment to get my house heater and thermostat checked and fixed. Tim came 2 days later (this is okay, I didn't consider it an emergency case). It turned out it was a simple fix, which took less than 30 minutes. I'm saving their contact information for other future work. My previous handyman wasn't very reliable, I'm glad I found M&M .