how to inspect hvac systems course

How do you inspect HVAC?

What to Expect During an HVAC InspectionRun a thermostat test.Inspect air filters.Evaluate proper airflow.Assess equipment condition.Check refrigerant levels.Check heater/furnace, gas connections and exhaust systems.Check the condensate drain and drip pans.Check the blower motor.More items...•May 5, 2021

How often should you inspect HVAC?

once a yearYour HVAC systems should be checked by a professional once a year. So if you have a standard central AC or a furnace, each of these units should be maintained, each year. If you have a heat pump system that you use year-round, then you'll want to schedule this service once every 6 months.Jan 15, 2018

What are the four basic categories of HVAC systems?

HVAC systems are divided into four categories which come in different sizes and specifications that fit into your home or business.Heating and cooling split systems. ... Hybrid split system. ... Duct free (Mini-split) ... Packaged heating and air conditioning system.Aug 30, 2019

Which type of building should have its HVAC system inspected every 2 years?

Clean Air Ducts (every 2 years) The National Air Duct Cleaners Association (NADCA) recommends inspecting supply side and return air ducts every 2 years (once per year in hospitals). If you find dirt, clean the ducts.Jul 24, 2009

What does a HVAC tune-up consist of?

A standard HVAC tune-up will include three basic phases: inspection, cleaning and service. The service may or may not include repairs; it depends on whether problems are detected during the inspection phase. AC System Inspection – The HVAC technician will most likely begin by inspecting your equipment.Apr 5, 2013

How many times AC should be serviced?

How Often Is AC Service Needed? Though there can be a bit of wiggle room, generally speaking, you should have your air conditioner serviced twice yearly: once in the fall and once in the spring. This is to ensure that it's clean, that its parts are in good shape and that it's operating as optimally as possible.Feb 25, 2021

What is AHU in HVAC?

An Air Handling Unit (AHU) is used to re-condition and circulate air as part of a heating, ventilating and air-conditioning system. The basic function of the AHU is to take in outside air, re-condition it and supply it as fresh air to a building.

What are the two types of HVAC systems?

Type of HVAC systems can be divided into central HVAC systems and local HVAC systems. This classification depends on zone types and the location of HVAC equipment. The central HVAC systems can serve multiple and single zones and locate away from the building, which needs distribution devices.

What are the most common types of HVAC systems?

Keep reading to learn how the four most common types of HVAC systems can improve your home comfort.Split Systems. ... Heat Pump Systems. ... Packaged Central Systems. ... Ductless Mini-Split Systems. ... THE HOME COMFORT EXPERTS.Jul 15, 2020

What are the 4 phases of planned maintenance HVAC?

4 Important HVAC Maintenance StepsDuctwork testing and repair.Air and water balancing.Duct cleaning.Fire and smoke damper testing.Apr 7, 2021

How do you maintain commercial HVAC?

Commercial HVAC Maintenance ChecklistChange the Air Filters Regularly. ... Visually Inspect the System. ... Re-Calibrate Your System Bi-Annually. ... Check & Clean Drainage Lines. ... Clean AC Evaporator & Condenser Coils.Apr 1, 2019

How often should a commercial HVAC be serviced?

twice a yearIn order to keep your commercial HVAC system in top working condition, you need to give it frequent TLC. Several factors can affect precisely how often you schedule commercial maintenance, but a good rule to live by is to schedule a maintenance check-up twice a year.Aug 27, 2018

Where is the HVAC unit located?

The outdoor condenser unit may be in dark shade, under dense vegetation, or under a structural covering, such as a deck or balcony. Inside the house, the HVAC system may be located in an attic, crawlspace or dark basement.

What is a general home inspection?

The general home inspection is based on the observations made on the date of the inspection, and not a prediction of future conditions. II. The general home inspection will not reveal every issue that exists or ever could exist, but only those material defects observed on the date of the inspection. 1.2.

How does a gravity furnace work?

In a gravity system, the warm air rises and cool air falls, and this is how the gravity warm-air heating system circulated air. Forced-air furnaces function primarily by convection. Heat is transferred to the air, and the air is circulated throughout the house.

Where does steam come from?

Steam comes from the boiler, rises up through pipes, and enters the heat-emitting units. The design and construction of a steam boiler is very similar to a boiler for a hot-water heating system. Control Components. The control components for a steam boiler are similar to those used in a hot-water heating system.

Is indoor air quality bad?

The indoor air quality can be a health problem for those who are sensitive to dust or pollen, or those who have allergies. There is a variety of air filtering devices available. There are devices that filter dust, dirt, smoke, pollen, odors, bacteria, mold, and many other contaminants from the indoor air.

What is a non-condensing furnace?

A typical non-condensing, mid-efficiency oil furnace uses less oil than a conventional furnace. At a mid-efficiency, non-condensing unit, a burner shoots flames and heat into a combustion chamber. The chamber (or firepot) is usually made of some type of heat- resistant ceramic material.

How much air does a gas furnace use?

Therefore, a conventional low-efficiency, standing-pilot gas furnace requires about 30 cubic feet of air (15 dilution plus 15 combustion) for every cubic foot of gas burned. If combustion air is inadequately supplied to a gas furnace, carbon monoxide will likely be produced. Carbon monoxide can be lethal. Draft Types.