Residential + Commercial
HVAC systems that keep Indiana comfortable year-round.
Indiana summers hit 90°F+. Winters drop below zero. Your HVAC system has to perform at both extremes. Oak & Mason installs, replaces, and upgrades heating and cooling systems for homes and commercial spaces across Central Indiana.
What's included
What's included in every HVAC project
Quick facts
Why choose us
Why Oak & Mason for HVAC
Right-sized systems
We run Manual J load calculations to ensure your new system is correctly sized — not oversized to pad the invoice, not undersized to fail early.
Licensed subcontractor network
We work with licensed HVAC technicians who meet Oak & Mason standards for quality and reliability.
Emergency replacement available
When your system fails in July or January, we move fast. Same-week emergency replacement for residential clients.
How it works
How an HVAC replacement works
Assessment
System age, condition, and load calculation. We tell you honestly whether repair or replacement makes more financial sense.
Equipment selection
We recommend equipment matched to your home's load, your budget, and efficiency goals — and explain the trade-offs clearly.
Old system removal
Full removal and responsible disposal of your existing equipment.
Installation
New system installed to manufacturer specs, ductwork inspected and corrected as needed.
Testing & commissioning
System tested across all zones, thermostat programmed, permit inspection completed, and documentation provided.
See our work
Recent HVAC projects
Project photos coming soon
Project photos coming soon
Project photos coming soon
HVAC problems? We'll fix it fast.
Same-week estimates for replacements. Emergency service available.