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About MJS Heating & Air Conditioning
MJS Heating & Air Conditioning has built a service record in Milwaukee over years of operation, earning a 4.5-star average across 32 verified customer reviews. The company handles residential heating and cooling needs throughout the Milwaukee metro area, with technicians responding to calls from homeowners dealing with boiler failures, AC malfunctions, and system installations. Customers consistently mention Michael (Mike) as the primary technician and owner, describing him as knowledgeable, transparent, and willing to rearrange schedules when families face urgent HVAC emergencies.
What distinguishes MJS from competitors stems from their emphasis on responsiveness and transparent pricing. Reviewers specifically note that Mike provided reasonable quotes before work began and completed jobs in under an hour for straightforward repairs. The company accommodates same-day requests when possible, a capability that proves critical during Milwaukee's temperature extremes. While the business does not display formal brand partnerships or specialized certifications in available materials, the repeated mentions of fair pricing and thorough explanations suggest a customer-first approach rather than upselling culture.
Kong Moua described experiencing a same-day response when his thermal expansion tank began leaking, with Mike and his nephew arriving hours after the initial call and completing the replacement in under an hour while explaining each step. Another reviewer from Birth in Color Midwifery detailed how Mike secured a new air conditioning unit within two days during an urgent situation, noting his empathy and flexibility. Kathy Crabtree-Brown praised Michael's guidance during a new HVAC installation, crediting his knowledge and collaborative approach with her team member Landon.
What Customers Say
31 of 32 reviewers awarded 5 stars, with consistent praise for Mike's same-day availability, transparent pricing, and technical knowledge. The single 1-star review involves a dispute over incomplete work and a court judgment, which prospective clients should independently verify.
Services
AC Repair & Maintenance
Diagnosing and repairing air conditioning failures, thermal expansion tank replacements, and system tune-ups.
Heating System Service
Boiler repairs, heating system maintenance, and troubleshooting for furnace and heat pump issues.
New HVAC Installation
Complete heating and cooling system installations for residential properties, including equipment selection guidance.
Emergency HVAC Response
Same-day service availability for urgent heating and cooling failures requiring immediate attention.
Thermal Expansion Tank Replacement
Specialized repair for leaking thermal expansion tanks, completed in under an hour per reviewer accounts.
System Inspection & Diagnostics
Evaluating existing HVAC systems to identify problems and recommend appropriate repairs or replacements.