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Mon-Dak heating & plumbing
About the business:
In the heart of Williston, our team at Mon-Dak Heating & Plumbing proudly serves your HVAC needs with unparalleled dedication. We specialize in HVAC services, ensuring your home's air conditioning and heating systems function optimally all year round.
Our furnace repair services are designed to keep you warm during the chilly North Dakota winters, while our expertise in air conditioning repairs guarantees comfort when the mercury rises. As a trusted local provider of HVAC solutions, we're committed to delivering exceptional service tailored to your unique requirements.
At Mon-Dak Heating & Plumbing in Williston, we don't just fix problems; we build lasting relationships with homeowners like you. With a customer rating of 4.7/5 (34 reviews), our professional work and commitment to quality are evident. Let us help maintain your home's comfort—contact us today for all your HVAC needs!
Services:
All services 3-
Hvac Contractor
Book from $50In Williston, our HVAC Contractor service ensures your home stays comfortable all year round. We specialize in heating and cooling …
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Air Conditioning Repair Service
Book from $50In Williston, we're your go-to for swift and effective Air Conditioning Repair. When your cooling system falters, count on us …
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Furnace Repair Service
Book from $50In Williston, we're your reliable furnace repair specialists. When your home needs a quick fix or replacement, our skilled technicians …
Photos and videos
Hours of operation
- Mon – Fri
- Sat – Sun
- 8:00 AM – 5:00 PM
- Closed
Latest reviews
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Chase Rehak26 June 2026
I've recently used Mon-Dak for both replacing a bad furnace as well as fixing another existing furnace. Each time they have shown up within a few hours and were very helpful. I would recommend them to anyone I know with furnace issues.
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Scott Scenters26 June 2026
I was at the end of my rope, and the knot was slipping ! I stopped in and explained my situation to them. 100 degree days, my ac unit stopped working and I didn't know what to do. Rick explained everything, he and another person came out, on the same day ! They fixed my problem. The next day, it quit working again, I was so confused. Rick came back out and fixed it again and explained everything to me in a way that I could understand. I'm 60 and know nothing about this stuff. This company and these men are exemplary in the way they treat people. They didn't have to help the way they did. This shows the quality of character these folks possess. Thank you.
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Joel Witthoeft26 June 2026
Called and they answered promptly and told me someone would get back to me. Less than 2 hours later they called to set up the work, and told me they gave priority to no heat calls, which blew my mind. I am so thankful for that. Most places would give priority to the biggest most profitable job.
Dog Chewed through some low voltage wires on the AC unit and popped a fuse in the Furnace when we switched it to A/C. Fixed Fuse, adjusted thermostat and tested, and repaired cabling. Reasonable bill. Receptionist and tech both were extremely nice. Class A service!
