Johnstone Supply Waterloo | Trusted HVAC Repair in Waterloo, IA

For Waterloo-area homes facing common problems like dirty condenser coils or thermostat malfunctions, we consistently stock a wide range of solutions. This includes coil cleaners, replacement thermostats, contactors, capacitors, and filters. Our local warehouse is focused on having the parts technicians need most to get systems running efficiently again, often available for same-day pickup.

Our primary focus is supplying HVAC/R professionals, contractors, and technicians with the wholesale parts and equipment they need to serve the community. This allows us to maintain the extensive, specialized inventory that supports local tradespeople in completing repairs and installations correctly and efficiently for Waterloo residents.

Through our established relationships with hundreds of top manufacturers, we can source over a million special-order items. While our local stock covers the vast majority of needs, for those rare items, we expedite the ordering process to get the specific part to you in Waterloo as quickly as possible, minimizing project delays.