820+ 5 Star Reviews
Open 7 Day Week

DIY Videos

Do you have an plumbing. air conditioning, or heating repair problem you need help with?
Has one of your systems gone out in your home and you want to figure out how to fix it?
Are you searching for answers to repair your plumbing, heating or air conditioning units?

Look through our library of easy DIY Videos and answers to frequently asked Plumbing, Air Conditioning and Heating related questions.

Can’t find your answer? Email us at service@alexhvac.com

Look through our massive selection of plumbing, air conditioning and heating articles below.

Videos

Igniter replacement

Installing A Honeywell Glowfly Hot Surface Igniter

Hot Surface Igniter- HVAC Companies Near Cary, NC Replacing a hot surface igniter that wasn’t working consistently. Notice the length of time the old one takes to get red hot and only gets red hot a split second before the gas valve opens. Starting from a cold start, the old

Read More »
Furnace Repair

Common Furnace Problems – Bad Ignition Circuit Board

Bad Ignition Circuit Board – Heating and Air Raleigh NC This Rheem circuit board was giving me a bad signal. I checked the indicated temperature switch and the switch was working fine. The problem was the circuit board as indicated by the voltage sent to the gas valve. Furnace Repairs

Read More »
HVAC Equipment

Negative Pressure Switch Failure

Negative Pressure Switch Failure – Heating and Air Holly Springs, NC Testing a negative pressure switch on a Lennox Induced Draft Motor Cary, NC Here’s a customer in Cary North Carolina that called us when their heating did not work. Checking the negative pressure switch on a Goodman horizontal furnace.

Read More »
HVAC Equipment

Pressure Switch Quick Check

HVAC Pressure Switches – HVAC Companies Near Raleigh, NC This brief video shows a quick check on a pressure switch. Although this is a very rudimentary check, the proper check involves checking with a manometer and checking to the correct pressure as printed on the switch.

Read More »
Capacitors

How to Test a Capacitor

In this episode, I demonstrate how to test the capacitance of two different run capacitors. I use the FieldPiece SS66 multimeter to check the micro farad reading on two capacitors. Be careful, capacitors can hold high voltage even after the power has been disconnected. Follow safe handling procedures to discharge

Read More »
Thermostat Install

Choosing the Right Thermostat

Which Thermostat is Right for Me? Selecting the correct thermostat for your system is very easy. You just have to know what to look for. This short video discusses the choices between a Furnace/AC Thermostat, a Heat Pump/AC Thermostat and a Programmable Thermostat. We install professional grade thermostats from Honeywell,

Read More »

AC Not Blowing Cold Air?

Is Your AC not blowing cold air? If you find your air conditioner is not cooling, here are some of the first steps you can take to see if it is possibly just a simple DIY project, or if you need to call an experienced HVAC technician to come and

Read More »

AC Installation | What you Need to Know!

Proper AC Installation is Crucial If you are like most, you spent a lot of time of choosing the right air conditioning unit for your home, but did you know that most future service calls on air conditioning units are due to a bad air conditioning installation?  What most do not

Read More »
Tesla Charger Installer

Whole House Surge Protector Installations

Whole House Surge Protectors Don’t leave the circuitry of your residential or commercial property unprotected! With lightning storms and unexpected power malfunctions become a more common occurrence, you need all the help you can get to keep your household and all your electrical appliances safe. To get the best protection

Read More »
Water Heaters

Selecting the Right Water Heater

Types of Water Heaters There are several different types of water heaters available on the market. Many different configurations and fuel types. Selecting the correct one can be tricky. Here are some things you need to know when replacing your water heater. What to Consider When Choosing a Water Heater

Read More »
Water Heaters

Tankless Water Heater vs Traditional Water Heater

Tankless Water Heater vs Traditional Water Heaters Are you considering  going from a traditional water heater to a tankless water heater? Here are a few things to consider with choosing the right water heater. Other than the instant “limitless” hot water, the biggest proponent in the argument for the tankless

Read More »
5/5

Experience our Award Winning Service

Save 10% TODAY on your Repairs! Check out or Preferred Service Membership for all of its great Benefits!

Request Service

Please fill out the form below to schedule a service appointment.