“They did a fantastic job on my mini split maintenance. After another company gave up, MJM HVAC came through and resolved the issues efficiently near Mountain Plains.”
Robert H.Mountain Plains
VerifiedFast replace ductless circuit board in North Spearfish, handled by certified local crews who understand Lawrence County. This important service addresses issues that can arise from the harsh conditions found in South Dakota, where extreme temperatures can lead to electronic failures. We provide a detailed flat-rate quote before any work begins, ensuring you are informed throughout the process, covering all 1 ZIP codes in North Spearfish. Your comfort is our priority at MJM HVAC.
Licensed · Upfront options · Clean work areas · Written guarantees
These are our most frequently served ZIP codes. Nearby areas may also qualify—call if you do not see yours.
Mountain Plains · Spearfish · St. Onge · Belle Fourche · Central City · Deadwood · Lead · Whitewood · Crook City · Fruitdale · Boulder Canyon · Nisland
Mountain Plains · Spearfish · St. Onge · Belle Fourche · Deadwood · All South Dakota cities
“They did a fantastic job on my mini split maintenance. After another company gave up, MJM HVAC came through and resolved the issues efficiently near Mountain Plains.”
Robert H.Mountain Plains
Verified“I trust MJM HVAC completely. They took care of my evaporator coil cleaning and did a fantastic job. Highly recommend for anyone in North Spearfish!”
Paul W.North Spearfish
Verified“I reached out for a quote on ductless mini split systems, and MJM HVAC was honest with no upsell tactics. I felt comfortable with my decision!”
Sam O.North Spearfish
VerifiedA real dispatcher is available if your question is not answered here.
Call 8334920770 →Most North Spearfish calls are scheduled the same day, with 24/7 emergency response across Lawrence County.
We quote a flat rate up front - typically in the range shown below - and you approve it before we begin.
Call now for fast, licensed Mini Split AC Repair anywhere in North Spearfish and Lawrence County.