Frequently Asked Questions

We Give You Answers To The Questions We're Asked Most

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How often should I service my air conditioner, heater, furnace, or heat pump?

Servicing your air conditioner in the spring before peak usage in the summer is highly recommended. The same advice stands for your furnace or heating system in the fall. If your home uses a heat pump, both for heating and cooling, a bi-annual service will keep your system running in top gear. Five Star Power Systems’ preventative maintenance plan will take care of system maintenance like filter changes, checking coils, wiring, housing, motor operations, and more!

What can I do to lower my energy bills?

There are plenty of ways to save money by cutting down your home’s energy usage. New, high efficiency appliances and HVAC systems operate at efficiency levels not possible even 5 years ago. Making sure that your HVAC systems meet modern standards is a huge step in saving money. Additionally, take a closer look at how you are using your HVAC systems.

How do I know if I need a new HVAC system?

If your HVAC system requires frequent repairs, is 15+ years old, or isn’t adequately heating or cooling your home, a replacement is recommended. Like anything, the mechanical components of an HVAC system age and wear over time. Not only do older systems not run as efficiently, but they are often inherently less efficient and less capable than newer systems. Replacing your home’s heating and/or cooling systems can end up saving you tons of money.

Do UV air purifiers and electronic air cleaners work?

Yes! UV air purifiers and air cleaning systems can have a significant role in the air quality and comfort of your home. Whole-house filtration systems can remove dust and pollen particles as small as .1 micron.

Are larger HVAC systems with higher capacity always better?

No. In most cases, having a larger-than-needed, high-capacity system is simply overkill for a home or building. Air conditioners are least efficient during the beginning of their cycles when first turned on. A system that is too large will cycle itself on and off with many short cycles due to the higher capacity. This means a large system will not only cost more to operate, but will ultimately deliver less comfort and temperature control to your home.


What is the difference between portable and standby generators?

Portable generators are, well, portable! They are useful for uses like camping and small emergency situations. A standby generator is a permanently installed, automatically operated generator that replaces utility power in the event of an outage. Standby generators are fueled by natural gas, propane, and diesel fuel.

What is the difference between an air-cooled generator and a liquid-cooled generator?

Air-cooled generators use fans to draw in air and cool the motor of the generator. Liquid-cooled generators use pumps to circulate coolant within the motor. Generally, liquid-cooled generators are for larger, high output generators.

Can portable generators be connected to a home?

Connecting small, portable generators to your home without proper load shedding and transfer switches installed can lead to electrocution and serious damage. It’s always advised that a professional electrician or generator specialist perform an installation.

Can a standby generator be run continuously?

Generators can run non-stop as long as proper maintenance intervals are given. Fuels like natural gas, propane, and gasoline are highly flammable, and (just like your car) motors must be turned off before refueling. That being said, it is also important to monitor your system’s fuel level to prevent it from running out of fuel while under load. If this happens, it could damage or destroy any connected appliances on the circuit.

What happens if the generator is accidentally overloaded?

If a generator and its requisite transfer switch are properly installed by a certified generator technician or professional electrician, it should contain a circuit breaker as well as a load-shedding mechanism.

Is there a need to exercise my generator?

Yes, simple maintenance is required to keep your system working in optimal conditions. Just like your vehicle, generators require regular oil and filter changes for reliable performance. Additionally, allowing the system to occasionally start up and “exercise” allows units with on-board systems monitors to check for performance issues.

What does fault code 29 (error code 29) indicate on my generator?

What does fault code 45 (error code 45) indicate on my generator?

These fault codes seem to be the most common fault codes we encounter with Cummins Onan generators. The answer to this question and the solution we find to be the most common for these error codes can be found in our fault code troubleshooting section.