Griffis Power Systems | Qualified HVAC Repair in Stockton, MO

10115 State Hwy 39, Stockton, MO 65785

(417) 955-2657

Company Overview

Griffis Power Systems brings 15 years of specialized expertise from the commercial generator world to serve the residential and light commercial needs of Stockton and the surrounding area. Owner-operated with direct factory training from leading manufacturers like Generac, Cummins, Kohler, and Detroit Diesel, the company provides honest, high-quality service for generator installation and repair. Beyond power systems, their seasoned partnerships extend reliable service to HVAC, garage doors, and general contracting, offering a trusted, local solution for a wide range of home and business needs.

Core Services

  • Manual to automatic door conversion
  • Generator repair
  • HVAC system repair
  • Generator installation
  • Automatic garage door installation
  • Electric installation or replacement
  • Garage door or opener repair
  • HVAC installation or replacement

Frequently Asked Questions

As a Stockton homeowner, my house has uneven cooling and some rooms just never get comfortable. Can you help with this common HVAC issue?

Absolutely. Uneven cooling is a frequent concern in our area, often stemming from ductwork issues, improper system sizing, or refrigerant imbalances. We start with a thorough inspection of your HVAC system and ductwork to pinpoint the cause. Our service can include rebalancing your duct system, sealing leaks, checking refrigerant levels, and ensuring your unit is correctly sized for your Stockton home, restoring consistent comfort room-to-room.

What are the benefits of converting my manual garage door to an automatic opener with Griffis Power Systems?

Converting to an automatic garage door adds significant convenience, security, and safety to your home. Our installation ensures reliable operation and integrates modern safety features like auto-reverse sensors. We handle the entire process professionally, from selecting the right opener for your door type to precise installation and testing, giving you peace of mind and easier access.

Why should I consider a professional generator installation instead of a DIY approach for my Stockton property?

Professional installation is crucial for safety, reliability, and compliance with local codes. Our team brings factory-certified training on brands like Generac and Cummins to correctly size the unit for your home's needs, ensure proper fuel line and electrical connections, and integrate it safely with your home's electrical panel. This expertise prevents costly damage, ensures the generator operates correctly during a power outage, and maintains your manufacturer's warranty.

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


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