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Claim This BusinessAltemp Mechanical has kept Twin Cities businesses comfortable and operational since 1994, earning a near-perfect 4.9-star rating across 11 verified reviews. The family-owned contractor operates around the clock from its Maplewood hub, serving commercial customers across the Twin Cities metro and surrounding communities. Factory-trained technicians handle every major brand across HVAC, refrigeration, and appliances, backed by a one-year labor warranty on all completed work. The contractor's emphasis on preventative maintenance programs has delivered measurable cost reductions for clients who stick to scheduled service intervals.
The contractor distinguishes itself through rapid deployment and advanced diagnostic capability. Technicians arrive with electronic testing tools that isolate root causes fast, shrinking downtime for businesses that cannot afford equipment sit-downs. Emergency calls receive round-the-clock response with paperless invoicing, eliminating billing delays and paperwork for busy managers. A 24-hour emergency line and one-call scheduling keep service simple for operators who need a single point of contact for multiple asset types.
Steve Hyde's review credits Aaron and Logan with diagnosing and repairing a system failure using a sourced part, completing the job in a single visit. Molly Gingerich says Erik arrived the day after her call to repair a workplace ice machine, took time to demonstrate the fix so her staff could handle future recurrences. Terri Leckas describes the entire process from the initial call through invoicing as the smoothest service experience she has had in town, with technician Neil demonstrating both professionalism and thoroughness on a challenging repair.
All four reviewers award five stars and each names a specific technician, with Erik, Neil, Aaron, Logan, and Eric appearing across the testimonials. Three of four reviews describe rapid response or same-day arrival, and every review explicitly recommends the contractor. No negative reviews are present in this dataset.
| Sunday | Open 24 hours |
| Monday | Open 24 hours |
| Tuesday | Open 24 hours |
| Wednesday | Open 24 hours |
| ThursdayToday | Open 24 hours |
| Friday | Open 24 hours |
| Saturday | Open 24 hours |
Complete new installs and full system swaps for commercial heating and cooling equipment across all major brands in the Twin Cities metro.
Rapid-response repair calls available 24/7, using electronic diagnostics to identify root causes and restore comfort fast.
Maintenance, repair, and replacement for walk-in coolers, freezers, and refrigerated display cases in hospitality and food service settings.
Scheduled service intervals that reduce equipment downtime, extend asset lifespan, and lower overall maintenance costs.
Service for ice makers, exhaust hoods, and food service equipment beyond traditional HVAC or refrigeration categories.
Digital invoicing for completed work orders, simplifying accounting for business owners and property managers.