If you have any questions you would like to see answered on this page please e-mail us the question with FAQ in the subject line.

Do you install and service minisplits?

YES we do install minisplits but we ONLY service units we have installed. In order to give our customers the best possible service we do not service residential minisplits installed by other contractors.

Do you install and service residential POOL heat pumps?

Unfortunately we do not install and service residential POOL heat pumps.

Do you repair residential Heat Recovery Ventilators?

Sorry we do not repair Residential HRV’s but can recommend an excellent contractor who can.

What is a BTU?

British Thermal Unit is a measurement of heat quantity. One BTU is the amount of heat it takes to raise 1 pound of water 1 degree fahrenheit.

What is a heat pump and how does it work?

A heat pump is a unit which absorbs heat at a low temperature (outside in the winter months) and rejects heat at warmer temperatures (inside your home in the winter months). Naturally hot will transfer to cold but we can reverse this process through work by using the refrigeration cycle.

The major difference between an air conditioner and a heat pump is a heat pump can reverse the flow of refrigerant to essentially air condition outside and reject the heat in your home during heating.

It is much more efficient to absorb existing heat and transfer it into your home then it is to create heat by burning fossil fuels.

To see an in depth video on how the refrigeration cycle operates in an air conditioner watch below:

What is a Ton of Cooling?

Ton of cooling is a measurement of heat quantity per hour. 1 Ton equals 12 000btuh (british thermal units per hour). The amount of btu’s it takes to melt 1 ton of ice is 288 000btu, done over a 24 hour period would equal 12 000 btu’s per hour, therefore coining the term 1 ton.

What is COP?

Coefficient of Performance is a ratio of efficiency. For example an electric resistive heater is 100% efficient for every 1$ of power purchased you will receive 1$ worth of heat and therefore has a COP of 1. A heat pump can be 300% – 400% efficient meaning for every 1$ of power purchased you will receive 3$-4$ of heat and therefore has a COP of 3 or 4. When operated in heating mode, a heat pump is more efficient than operating resistance heaters in most cases. This is because a space heater can convert only the input electrical energy directly to output heat energy with none of the efficiency or conversion advantages of a heat pump. Likewise, when a heat pump operates near its most inefficient outside temperature, typically 0 °F (−18 °C), the heat pump will perform close to the same as a resistance heater.
In the case of cold climates, water or ground source heat pumps are the most efficient solution. They use the relatively constant temperature of ground water or of water in a large buried loop to moderate the temperature differences in summer and winter and improve performance year round. The heat pump cycle is reversed in the summer to act as an air conditioner. The disadvantage to geothermal is the initial upfront installation cost.

What is HSPF?

HSPF is a measure of efficiency for heat pumps. Heating Season Performance Factor is a ratio of the amount of heating produced to the amount of energy used defined during the heating season. Heat pumps also cool the air in a home and seasonally the efficiency of the heat pump is measured the same as an air conditioner.

What is inverter technology?

Inverter technology is simply a way to control the speed of a refrigerant compressor. In the past we were limited to the compressor being on or off. Meaning we had all of the capacity at once or none at all. By being able to control the speed of the compressor we can now vary the capacity of the system. With non-inverter standard systems the most power consumption and wear on a unit comes from starting and stopping the equipment. Now with inverter technology we can keep the equipment running longer at reduced capacity matching the load of the space and increase the efficiency.

What is relative humidity?

Relative humidity is a percentage of humidity in the air compared to how much the air can hold. For example 1 pound of air at 75*F can hold 0.013lbs of humidity and 1 pound of air at 32*F can hold 0.0035lbs of humidity. Therefore if 1 pound of air had 0.0035lbs of humidity in it at 32*F it would have an RH of 100% and at 75*F an RH of 20%. When air reaches 100% RH the humidity will begin to condense out of the air.

What is SEER?

Seasonal Energy Efficiency Ratio, which is defined by the Air Conditioning, Heating and Refrigeration Institute in its standard ARI 210/240, is a performance Rating of Unitary Air-Conditioning and Air-Source Heat Pump Equipment. The SEER rating of a unit is the cooling output in Btu (British thermal unit) during a typical cooling-season divided by the total electric energy input in watt-hours during the same period. The higher the unit’s SEER rating the more energy efficient it is. This rating is related to the cooling efficiency and should not be confused with the heating efficiency. Though typically a high SEER will relate to a high HSPF both ratings should be considered.

Why is it important to change my air filter?

The air filter in a furnace prevents dust from clogging up your furnace heat exchangers. When an air filter begins to plug up it prevents the fan from moving enough air through your furnace. The correct air flow is extremely important with air conditioners and heat pumps. When a heat pump cannot absorb enough heat or cannot reject enough heat because of the lack of airflow, damage can occur to the compressor, increase wear will on your system and the system will not operate at its peak efficiency causing you to spend more money for the same results. The more effective your air filter is at catching dusk particles the faster it will clog up and reduce air flows and should be monitored more closely.

Bob's Cool Air
Bob's Cool Air
Bob's Cool Air