Vacuum pumps are a necessary part of HVAC to get a system into a vacuum and even test for leaks. The most common use is to pump down a line-set and then let it sit to see if there are any leaks. A/C systems require a vacuum to work correctly, which a suitable vacuum pump… Read More: Our Picks for Best DIY Low Cost Small Job HVAC… »
Buying a new recovery machine can be quite an investment that needs to last for many years. Before leaping in and buying a unit looking through your options and reading reviews is the best buying method to find a good unit. What fits one scenario might not fit another. If you’re a one-man operation, your… Read More: Our Picks for Best Portable Refrigerant Recovery Machine »
Contactors and relays are used in almost all heating, cooling, and refrigeration systems to manage electrical loads. They are both similar since both contain a coil that opens or closes the contacts. A Contactor is larger and capable of carrying more amperage than a relay. When testing same procedures can be used to check both… Read More: HVAC Contactors and Relays Explained »
A furnace blower motor can be replaced by a handy DIY homeowner, which can save money. Of course, if in-doubt, be sure to call a professional HVAC technician. A new motor and capacitor will need to be bought to replace the old unit. Most hardware stores will not carry a furnace motor, but a new… Read More: How To Replace a Furnace Blower Motor and Capacitor »
What is a Fan Limit Switch? A furnace has two switches, a fan limit switch and a high limit switch; these switches can be separate or in one package called a combination switch. High limit switch A high limit control switch will turn off the gas to a furnace if the temperature becomes too high.… Read More: Test and Replace the Fan Limit Switch on a Furnace »
A brazing torch is often required in HVAC mainly to solder line-sets or fix a refrigerant leak. As with many tools in HVAC, they are not the cheapest thing to buy, usually running $200-$500 dollars depending on the brand. Often, a set can be bought cheaply at a swap meet although this may be a… Read More: Our Picks for Best HVAC Brazing Torch Oxy Acetylene Kit »
Mini split units are a great way to heat or cool a space, with many different-sized units available. Mini split sizes can range from small 6000 BTU units to large 36000 BTU units. The BTUs a unit is rated for is how much cooling and heating capacity it has. Matching the BTU output of a… Read More: What is the Smallest Mini Split Unit »
Window-mounted air conditioning units come in all shapes and sizes, from small to large units. Many small-sized units are available to fit into a small window or small room that needs to be cooled. What is the Smallest Window Air Conditioner Available? The smallest window air conditioner we have been able to find is the… Read More: What is the Smallest Window Air Conditioner? »
Finding a refrigerant leak in an HVAC system can be easy at times, and other times, almost impossible. One method is to use a bubbly liquid sprayed around where a possible leak is to visibly see the location of the leak. Using this method does work but often requires lots of time, especially for small,… Read More: Our Picks for Best Refrigerant Leak Detectors for HVAC »
If you have an error code on a Daikin mini split, the problem can be found by using a chart with the codes listed. Sometimes Daikin unit will not be working, and no code displays, in which case the remote control can be used to find the error code. To use the remote control to… Read More: Daikin Mini Split Error Codes List »