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In the winters, this works well, since the outside air is much cooler and may contain much less humidity than the warm air inside. Running the HRVs all the time can bring in too much cold air, causing your furnace to work harder than necessary.

Set the control to the highest setting in warmer weather; lower the setting as the weather cools. In winter, set the dehumidistat low enough to prevent condensation on windows.

In cold climates, the cool air is warmed by this process, while in warm climates, the cool air is cooled by the stale air if the indoor temperature is cooler than the outdoor temperature.

Building owners are often asked to install whole-house mechanical ventilation with heat recovery when it is not necessary. As a rule of thumb, installing whole-house MVHR is only valuable if: you have eliminated all thermal bridges. walls have a U-value of 0.12 to 0.15.

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The DES/DX with ERV includes an enthalpy exchange energy recovery wheel between the exhaust pipe and the outside air before the pre-cooling coil. Incorporating the ERV in the DES/DX system tempers the outside air, eliminating significant compressor tonnage and thereby reducing overall energy consumption considerably. The air is then efficiently dehumidified before entering the space. The outside air is cooled and dehumidified through one or more cooling circuits before entering the desiccant wheel. The desiccant wheel provides additional dehumidification as it returns the air temperature back to neutral space conditions (but much lower % relative humidity). Waste heat from the condenser is used to reactivate the desiccant wheel.

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The DES/DX ERV unit is a highly efficient dedicated outdoor air unit that combines the benefits of base desiccant dehumidification with energy recovery ventilation. Outdoor air is tempered in the ERV section and dried with a cooling coil followed by further dehumidification with a desiccant wheel.

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The most important part of the HVAC maintenance aspect is maintaining unrestricted airflows. Dust, dirt and debris are the worst enemies of an HVAC system. Whether it’s an indoor or outdoor unit, you must keep all filters clean and heat exchangers and coils free of restrictions.

Regular filter replacement helps your heating and cooling system operate at peak levels and improves indoor air quality. It is important to change filters regularly to ensure proper airflow and keep your home free of dust, allergens and germs. Depending on the type of filter you have, you may require weekly or monthly filter replacements. Your Tekman Experts service or installation technician will recommend the ideal filters and replacement schedules for your unit(s).

You may have tried to cover indoor odors by spraying air fresheners or lighting candles. Unfortunately, these tactics only mask odors, not eliminate them. In fact, these remedies can negatively affect indoor air quality from chemicals that cause allergic reactions or eye irritation for homeowners.

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Choosing the enthalpy exchanger, instead of the standard heat exchanger, means that the unit becomes an energy recovery ventilation (ERV) system, rather than just a heat recovery ventilation (HRV) system.

It prevents excessively dry air in the winter and moderates cold outside air. This membrane is impervious to mold spores and microbes of all kinds. Moisture recovery ensures permanent frost-free operation, even at outside temperatures below 0°C. It also eliminates the need for condensate drainage under normal conditions, allowing for flexible planning and installation. This allows you to offer your customers maximum comfort while helping them save money.

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By Rachel Robison

Rachel Robison is a blogger who collects information on court filings and notices.