Time to Replace Your HVAC System

gas furnaceRegular maintenance of the heating and cooling system can lengthen its lifespan. However, wear and tear are inevitable that replacing your HVAC system becomes necessary. We have listed below the signs that indicate the system needs a replacement.

Clues It’s Time to Replace Your HVAC System

Age of the HVAC System

An air conditioner or heat pump that is more than 10 years old and a more than 15-year-old furnace or boiler are indications that the system needs a replacement. When looking for a new unit, look for the Energy Star label. HVAC Systems with Energy Star label are highly efficient, saving you up to 20% on energy costs. Call a professional HVAC contractor to have the new system installed.

Recurrent Repairs

An HVAC system that requires recurrent repairs results in higher energy bills. The unit is also becoming more inefficient.

Irregular Room Temperature

The temperature in some rooms becomes extreme. Too cold or too hot temperatures in some rooms are telltale signs that the system is not working properly brought by inadequate insulation and duct problems.

Absence of a Programmable Thermostat

Your home is either too cold or too hot when you arrive. If no one is left at home, a programmable thermostat will allow you to set the right temperature to make your home comfortable when you arrive.

Humidity Issues

Poor system operation, leaky ductwork, and inadequate equipment lead to humidity problems.

Dust Accumulation

If your home is accumulating too much dust, it could be that the HVAC system has leaky ducts. Leaky ducts can draw air and particles from crawl spaces, attics, and basements and scatter them all over your home. Sealing the ducts can solve this problem.

Noisy HVAC System

If your unit is becoming too noisy, it is an indication of indoor coil problems and a small duct system.

Below 5 Energy Yardstick Score

A home energy yardstick score of below 5 indicates that you have an above average energy usage that leads to higher energy bills.

Questions to Ask the HVAC Contractor

It is important to ask the correct questions before purchasing a new system. Here are some questions that will help you evaluate if you found the right HVAC system for you.

  • What size HVAC system is appropriate? If you have room additions, matching the specifications of your current system may not be a good option.
  • Do you need multiple cooling and heating zones? A reliable and professional HVAC contractor should be able to help you choose the appropriate system that will give you better comfort and energy savings.
  • What are your best alternatives? The contractor should be able to give you efficient alternatives, such as radiant heat systems, heat pumps, and forced-air heating and cooling systems.
  • Should you address humidity problems in your home with either a humidifier or a home dehumidifier?
  • Does the contractor have any special offers or rebates?
  • Will you be getting a tax credit with the new system?
  • What is the efficiency level of the new system? Aside from the lifetime operating costs, you should also consider operating costs when making a decision.
  • What are the filter types they offer? Filter types vary from washable and disposable, with some capable of improving indoor air quality, like HEPA filters, that protect the family’s health.
  • What service plan do they offer to protect and maintain your system?

Replacing your HVAC system does not merely start from buying a new system or installing it at home. It requires a reliable HVAC contractor and having honest communication.

Heat Pump Basics Every Homeowner Should Know

A heat pump system is an air conditioning unit that provides both comfort cooling during summer and comfort heating during winter. It works like a central air conditioning system, with the only difference being the unit must function throughout the year. Understanding the heat pump basics will help you to purchase the HVAC system that best fits your needs.

How can a heat pump system give off both cooling and heating?

A typical heat pump system has two coils, or heat transfer surfaces, referred to as the evaporator and the condenser. The indoor coil is found inside the air handler or blower compartment. The outdoor coil has a large fan that draws air through it.

To generate the needed mode of system operation, the function of evaporator and condenser is altered. Depending on the mode it is operating in, both coils can work as either the evaporator or condenser.

How does a heat pump system provide cooling?

To provide cooling during the summer months, the indoor coil acts as the evaporator while the outdoor coil acts as the condenser. The inside air travels across the cooling coil (evaporator) and transfers heat from the air to the coil. Once the heat reaches the outer coil, the condenser expels the air to the outdoors.

How does a heat pump provide heating?

The two coils exchange functions in the heating mode. The internal coil works as the condenser while the external coil works as the evaporator. The outside air travels across the external coil, removing the heat from the air to the coil and is transferred to the internal coil. Once it reaches the condenser, the outside heat is expelled to the air traveling across the external coil.

How does the evaporator take in heat?

To take in heat from a substance, the air temperature must be lower than the medium heat being transferred. For example, the evaporator’s surface temperature must be lower than 75° to cool a 75° air in an inhabited space.

To facilitate the preferred heat transfer, the refrigerant (heat transfer medium) is distributed through the coil.

How does the condenser eliminate heat?

It is necessary for the condenser to have a regular temperature that is higher than the surrounding medium. To facilitate the preferred heat transfer, the refrigerant is distributed through the coil.

A refrigerant is a chemical element that can absorb and eliminate huge amounts of heat energy rapidly. Regulating the refrigerant’s pressure at various points in the heat pump system determines whether the heat transfer system works as the evaporator or as the condenser.

How can I keep the evaporator cool?

The evaporator takes in heat into the system, so you need to make sure it is cooler than the refrigerant. To make this possible, it is important for the refrigerant to have a low temperature, too. To obtain the preferred refrigerant pressures in the evaporator, we utilize the compressor and metering device of the system.

How do I keep the condenser warm?

To keep the evaporator cool and the condenser warm, keep the refrigerant’s pressure in the condenser high. The compressor and the metering device in the heat transfer coils obtain the preferred pressures of the refrigerant.

The above are just a few of the heat pump basics you need to know to know how your system works and if you need the help of an HVAC expert.