Generally speaking, yes you should. If, however, you've recently replace one component, you may not need to replace everything. For example, if your furnace was installed within the last 5 - 7 years you probably will be okay just installing a new condenser and coil. Beware of companies who insist on replacing everything, or who claim that you'll void warranties on your condenser if you don't replace your furnace - that's a load of horse hooey.

The air filters generally ship within 4 to 10 business days. If you order a Custom Size Air Filter, we generally need from 10 days to 2 weeks to manufacture your custom air filter plus delivery time. AC Filter shipping is by UPS Ground from Celina, TX or Tulsa, OK. Time in transit will vary. We cannot ship to P.O. Boxes. You will receive an email with your tracking number from UPS Quantum View when your package ships. See similar questions...

The best time for replacement is between October and April, as these are the months that are generally require little or no air conditioning and would minimize discomfort to you. See similar questions...

Most furnaces and air conditioners last between 15 and 20 years, but by replacing your furnace and/or air conditioner before its life expectancy is up with a high efficiency furnace and/or air conditioner can save you money on your gas and electric bills. See similar questions...

Generally 12 - 15 years. Of course, this depends on several factors, among them how the system has been maintained, quality of construction, and environmental quality. Regular preventative maintenance has been proven to extend the useable life of your system, but many people only have their system maintained when it breaks down. Quality of construction is another factor. Some lower tier units just aren't built as well as other brands, and they don't tend to hold up well as they age. See similar questions...

Yes. Air conditioners require more air flow than furnaces and it may be necessary to add more ductwork. Also, local codes require that your ductwork be insulated in attics and crawl spaces, and your electrical service may need to be upgraded. McCullough Heating & Air Conditioning can design a central air conditioning system for you and provide you with a fixed price quote to install it. See similar questions...

It is advisable to replace the system as soon as the system fails and the cost of repair is expensive. If you wait until it gets hot you may have to wait because of the volume of business most heating and conditioning companies get during this time. Studies show the majority of people feel comfortable with a cooling temperature of 75 degrees and a heating temperature of 70 degrees. Also, most houses are designed on this standard. However, individual comfort standards may very. See similar questions...

Absolutely. By having our highly trained technicians installing a new high efficiency furnace and/or air conditioner, your gas and electric bill will usually be cut in half. Insulation quality in your home is also important in keeping your heating and air conditioning bills lower. See similar questions...

McCullough’s comfort consultant will measure your home and calculate the actual heating & cooling load on the home (calculation using Manual J v8 that incorporates information about window size & direction, walls, ceiling, floor, appliances, insulation, etc). This will determine the proper size of equipment and ductwork that is needed. This will be compared to your current equipment & ductwork and will be adjusted based on your lifestyle, etc. See similar questions...

Generally allow one day for replacing a heating and air conditioning system. Installing a brand new central heating and cooling system, including ductwork , may take two days. Be aware that reputable contractors will refuse to install a new air conditioning system or heat pump system when it is raining. This is due to the fact that when moisture gets inside refrigerant lines it can be very damaging and can cause reliability and maintenance issues. [ back to top ] See similar questions...

Not necessarily, however there are many considerations here. Similar to the question above, if you think you are going to need to replace your furnace in the next 24 to 36 months, you should consider having it installed with the air conditioner, i.e., a complete system. With the new higher efficiency system you'll probably qualify for cash rebates, low interest financing, and far better warranties than when you replace one component at a time. See similar questions...

YES! A new 15 SEER air conditioner can usually cut the electricity used by the old air conditioner in half. Even a 12 SEER air conditioner (this is the minimum efficiency the federal government allows to be sold) will cut the electricity used by approximately 40%. A new 90% furnace can usually cut the gas used by the old furnace by as much as 30%, and a new 80% efficient furnace (minimum allowed by the federal government) will use approximately 20% less. [ back to top ] Yes, this is fine. See similar questions...

Any efficiency air conditioner (or heat pump) will operate with a gas furnace. There is no one type or efficiency that is "better". In most parts of the country the heating system runs more than the air conditioner and is, therefore, the more expensive item to operate. For this reason, We recommend that your choice of a furnace is more important than the air conditioner. You will benefit from purchasing the best, lowest operating cost, gas furnace. See similar questions...

This is not generally recommended since the moisture added to the air could condense when it comes in contact with the very cold air conditioning coils. You will likely not need supplemental humidity during the summer months anyway. See similar questions...

Cactus Mechanical will measure your home and calculate the actual heating and cooling load on the home. This will determine the proper size of equipment that is needed. This will be compared to your current equipment and ductwork and will be adjusted based on your lifestyle, etc. quot;oversized" air conditioner will cool your house quicker, but it will use more electricity and will not remove humidity adequately. See similar questions...

They should be checked and cleaned, to be sure they are operating safely and at their top efficiency. See similar questions...