Professional HVAC Service | Locally Owned | Full-Service Capability
Before You Replace It, Let Us Diagnose It.
HVAC not heating, cooling, or running right? We troubleshoot the equipment you already own, explain what is actually wrong, repair it when repair makes sense, and handle replacement when it doesn't.
Diagnose First
Repair When Reasonable
Complete Installations
Financing Available
Local doesn't mean limited.
Professional HVAC Service With Full-Service Capability
Grease & Threads Mechanical and HVAC provides diagnostics, equipment repair, seasonal maintenance, complete system replacement, and installation. You get a local company without giving up the capability you expect from a larger HVAC contractor.
HVAC Diagnostics Air Conditioning Repair Heating Repair Heat Pumps System Replacement Installation
What We Do
We built the business around figuring out what is actually wrong, making a reasonable repair when possible, and giving customers a straight answer when replacement is the better move.
HVAC Diagnostics & Repair
Air conditioners, furnaces, heat pumps, thermostats, airflow problems, electrical faults, controls, and equipment that simply is not doing what it should.
Second Opinions
Been told you need a whole new system? We can diagnose the existing equipment before you spend thousands.
HVAC Maintenance
Seasonal inspections, cleaning, system checks, and preventative maintenance to catch problems before peak heating or cooling season.
Installation & Replacement
When replacement really is the right answer, we handle complete HVAC system installation and commissioning.
Selected Appliance Repair
Washers, dryers, ovens, and ranges when the repair fits our service scope. Refrigerator repair is not offered.
Done for You Home Comfort Plan
$17/month recurring HVAC maintenance with two scheduled maintenance visits each year, priority scheduling, and member benefits.
No refrigerator service or refrigerator repair.
HVAC Financing
Repair or Replacement Bigger Than Expected?
Financing options are available through Acorn Finance. Check available offers before putting off a needed HVAC repair or replacement.
Financing is offered through Acorn Finance and participating lenders. Approval and terms are determined by the financing provider.
Diagnostics matter
Sometimes a Small Failure Looks Like a Big Problem
A failed electrical component, control problem, airflow issue, or worn part can make an entire HVAC system appear dead. That is why our first step is diagnosis-not automatically quoting replacement equipment.
Start With a $99 DiagnosticTwo Simple Ways to Get Started
We keep online booking simple. Choose the service that matches what you need.
$99 HVAC Diagnostic
$99
For residential AC, furnace, heat pump, thermostat, airflow, electrical, and control problems. We diagnose the problem first and explain what we find.
Done for You Home Comfort Plan
$17/month
Two scheduled HVAC maintenance visits each year, priority scheduling, member benefits, and routine maintenance handled for you.
Service Area
Serving Sullivan County, Vigo County, Greene County, and Knox County, Indiana.
Local service for homeowners and small businesses throughout the four-county area.
Business Hours
- Monday-Friday: 7:00 AM-4:00 PM
- Saturday: 8:00 AM-12:00 PM
- Sunday: Closed
- Emergency/after-hours service: Available as needed
Not Sure Whether to Repair or Replace? Start With a Diagnosis.
Get a straight answer about what your equipment actually needs before making a major spending decision.
