Mon-Dak heating & plumbingHVAC contractor in Williston, ND
Mon-Dak heating & plumbing is an HVAC contractor at 620 E Broadway, Williston, ND 58801, ranked #4 of 11 HVAC contractors in Williston and rated 4.7 from 33 Google reviews. Open Monday to Friday.
Williston, NDUpdated 0 paid placements in any rankingHow we rank
Key facts
| Address | 620 E Broadway, Williston, ND 58801Get directions |
|---|---|
| Phone | (701) 572-3079 |
| Website | mondakhp.com |
| Hours | Monday to Friday: 8 AM – 5 PM |
| Google rating | 4.7 from 33 Google reviews |
Service area
Based in Williston, NDView on map
Opening hours
| Day | Hours |
|---|---|
| Monday | 8 AM – 5 PM |
| Tuesday | 8 AM – 5 PM |
| Wednesday | 8 AM – 5 PM |
| Thursday | 8 AM – 5 PM |
| Friday | 8 AM – 5 PM |
| Saturday | Closed |
| Sunday | Closed |
- Open evenings — no
- Open Saturdays — no
- Open Sundays — no
Typical heating and cooling prices
| Job | Low | Typical | High |
|---|---|---|---|
| AC replacementPer system, installed (unit plus labor); typical range of customer-reported jobs. US national range | $3,887 | $5,978 | $8,073 |
| Furnace replacementPer system, installed; typical range of customer-reported jobs. US national range | $2,823 | $4,814 | $6,896 |
Market ranges for the trade, checked October 2026, not a quote from this business. Ask for a written estimate.
Compare nearby HVAC contractors
| Business | Rank | CR Score | Google rating | License verified | Saturday | Sunday | Distance away |
|---|---|---|---|---|---|---|---|
| Mon-Dak heating & plumbing (this business) | — | 59 | 4.7 (33) | — | No | No | |
| Excel Plumbing, Heating, & Cooling | #2 | 62 | 5.0 (35) | — | Yes | No | 1.6 mi |
| Polar Refrigeration Heating | #3 | 62 | 4.2 (56) | — | — | — | 0.1 mi |
| Just Chillin’ Refrigeration | #5 | 56 | 4.5 (13) | — | No | No | 0.1 mi |
Reviews
ContractorsRanked reviews
No ContractorsRanked reviews yet
4.7from 33 Google reviews
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Questions about Mon-Dak heating & plumbing
How is Mon-Dak heating & plumbing ranked in Williston?
Mon-Dak heating & plumbing is ranked #4 of 11 HVAC contractors in Williston by CR Score, with 59 out of 100 as of October 2026. The score weighs reputation, credentials, review volume, recency, availability, trade focus, proximity, claimed profile, partnered and ContractorsRanked reviews. No business can pay to change its rank.
What are Mon-Dak heating & plumbing’s hours?
Mon-Dak heating & plumbing is open Monday to Friday. Its listed hours are Monday to Friday, 8 AM – 5 PM. It is closed on Saturdays and closed on Sundays. Hours come from the business listing; holiday hours may differ.
What do Google reviews say about Mon-Dak heating & plumbing?
Mon-Dak heating & plumbing has a rating of 4.7 from 33 Google reviews. The CR Score adjusts the star rating for review count, so a high rating from a few reviews counts for less than the same rating from many.
How do I contact Mon-Dak heating & plumbing?
Call Mon-Dak heating & plumbing on (701) 572-3079. The business is at 620 E Broadway, Williston, ND 58801. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.
Own Mon-Dak heating & plumbing? Claim this profile.
Claiming is free. Correct your hours, trades and service area. The CR Score is recalculated from corrected data; payment never changes it.