Reliable HVAC Services in Sullivan, IN 47882 - Knossos Contractor Grade
Sullivan, IN 47882
Business Overview
Knossos Contractor Grade is a trusted, family-owned and operated home service business proudly serving Sullivan, Indiana, and the surrounding communities. Founded and run by a father-son team, we are the only licensed plumbing contractor based right here in Sullivan. Our journey began with an apprenticeship at the oldest plumbing and HVAC business in town at the time, and we've built on that foundation for over 30 years. I became a licensed journeyman plumber in 1998 and a licensed plumbing contractor in 1999. Our expertise extends beyond plumbing to include full HVAC/R services—I'm EPA Universal certified for refrigerant handling and was NATE certified in 2008—as well as electrical work, supported by formal electrician and home inspection training. This combined knowledge allows us to handle complex projects that involve multiple systems, ensuring a coordinated and reliable solution for your home. We believe in doing the job right with the experience and local understanding that comes from being your neighbors.
Frequently Asked Questions
As the only licensed plumbing contractor in Sullivan, can you handle jobs that involve both plumbing and electrical work?
Yes, absolutely. Our unique background includes formal training and licensure in plumbing, HVAC, and electrical work. This means for projects like installing a new garbage disposal, water heater, or sump pump—which often require both plumbing and electrical connections—we can manage the entire job efficiently and to code. You get a coordinated solution from one trusted local team, which can save time and ensure all systems work together properly.
My smart thermostat keeps losing connection, and some rooms in my Sullivan home aren't heating or cooling evenly. What could be the issue?
These are common issues we see in local homes. Smart thermostat connectivity problems can often be traced to wiring issues at the unit or compatibility with your home's electrical system. The uneven temperatures frequently point to duct leakage, which reduces airflow to certain rooms. Our EPA Universal and NATE certified technicians can diagnose both the electrical connection at your thermostat and perform a thorough inspection of your ductwork to seal leaks, improving your system's efficiency and comfort throughout your home.
I need a new circuit breaker panel and a gas line run for a generator. Can you manage this type of multi-system installation?
We can. Our comprehensive training allows us to expertly handle the electrical side of a generator installation, including upgrading your electric panel to handle the new load, as well as the fuel side by safely installing the necessary gas line. Handling both aspects in-house ensures the installation meets all safety codes for gas and electrical systems and that the components are correctly integrated for reliable backup power for your home.
Core Services
- Drain repair
- Water heater installation
- Light fixture repair
- Electric repair
- Electric vehicle charging station installation
- Wire installation
Business Location & Hours
| Mon: | Open 24 hours |
| Tue: | Open 24 hours |
| Wed: | Open 24 hours |
| Thu: | Open 24 hours |
| Fri: | Open 24 hours |
| Sat: | Open 24 hours |
| Sun: | Open 24 hours |




