Mon-Dak heating & plumbing
Mon-Dak heating & plumbing is a HVAC provider serving Williston, ND. Rated 4.7★ with 33 Google reviews. See services, review signals, and request a quote.
HVACWilliston, ND
On this page
Company overview
- TradeHVAC
- Service areaWilliston, ND
- Google rating4.7★ (33 reviews)
- Phone(701) 572-3079
- Address620 E Broadway, Williston, ND 58801, USA
Photos
Photos from Alina Venieru
What customers say
“I called a few other companies when my AC was not working and they either didn't respond or couldn't fit me in for a few days in the high heat. Lloyd at Mon-Dak heating and cooling got back to me in …”
“Had an issue with my furnace, blower motor went out and I installed a new one but it was getting too hot and shutting down. It was a cold snap and they were busy but they did take a few minutes to hel…”
“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 every…”
Key highlights
Strengths
- Highly rated (4.7★ average)
Things to ask
- Confirm availability for your area and timeline
- Ask about warranty terms on parts and labor
- Request a written estimate before work begins
- Ask about payment plans or financing
Explore nearby research
Frequently Asked Questions
What services does Mon-Dak heating & plumbing offer?
Mon-Dak heating & plumbing provides: HVAC diagnosis, repairs, and full system installs. They serve residential and commercial customers in Williston, ND.
What is Mon-Dak heating & plumbing's rating?
Mon-Dak heating & plumbing has a 4.7 out of 5 star rating based on 33 Google reviews.
Is this company licensed in North Dakota?
All listed providers have a verified North Dakota contractor license at time of publication. You can verify on the North Dakota Secretary of State — Contractor Licensing (state contractor registration only; no dedicated statewide HVAC trade license) lookup at https://firststop.sos.nd.gov/search/contractor.
Does Mon-Dak heating & plumbing offer emergency service?
Contact them directly to ask about emergency availability and after-hours service.
How do I request a quote?
Use the CTA below to submit your ZIP. You can message this company alongside two or three other local pros for easy comparison.
Licensing verified 2026-04-23. Reviews refreshed 2026-04-23.
Licensing data: North Dakota Secretary of State — Contractor Licensing (state contractor registration only; no dedicated statewide HVAC trade license) · Company data: verified business records + Google Business profile
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