When you move to a new house, the air doesn’t smell good, steel pipe bringing in some stale air, what you need to do is the ventilation. So today’s essay will tell you some ways to ventilate your house.

There were not ventilation for homes for centuries, but their house still smelt good, didn’t it? Why is it necessary for us today to ventilate houses with all this effort and often considerable expense?

The reason why ventilation is more important today than it was long ago is about 100 years ago, the houses that people lived were really leaky. There were not any insulation in the walls, which fresh air could pretty easily enter. The fresh air can go through all the gaps, cracks, and holes in the building envelope.

Besides, 100 years ago, natural products which didn’t result in significant offgassing of volatile organic compounds (VOCs), formaldehyde, flame retardants, and other chemicals were the mostly building materials, because these volatile organic compounds are so prevalent in today’s building materials, furnishings, and other stuff.

  1. No ventilation Systems

The most common choice in American homes is no ventilation, which can remove stale indoor air and moisture with no mechanical system, besides, it can bring in fresh outside air. Buildings were not insulated in the distant past, which can rely on the natural leakiness of the house. This strategy worked reasonably well, however, even a leaky house can not make sure that it has good ventilation. If you want to work this strategy well, there will be a significant difference in temperature between outdoor and indoors or a breeze outside. Ventilation can be driven when either of these conditions creates a pressure difference between indoors and out. So, even in a really leaky house, there might be very little air exchange in in the spring and summer, especially on the calm days.

  1. Natural ventilation

Bringing in fresh air and getting rid of stale air are specific design features in this uncommon strategy. Here is a good method that you can create a solar chimney which can use the sun to heat the air, make the air more buoyant, then the buoyant air will rise up and out through vents near the top of the building. Through this kind of method, the pressure in the house will become lower, then the fresh air will be drawn in through specially placed inlet ports. Opening windows is the most common ventilation strategy which a lot of homeowners may believe, however, in the summer, they will always just open windows which con not guarantee good air exchange due to the pressure differential issue just mentioned.

  1. Exhaust-only mechanical ventilation

Most people will use a small exhaust fans to exhaust stale air and moisture generated in those rooms such as bathrooms, which will operate either continuously or intermittently. In your house, a modest negative pressure will be created bu this strategy, which can pull in fresh air in two ways, on one hand, cracks and other air-leakage sites, on the other hand, strategically placed intentional make-up air inlets. This strategy is simplicity and low cost, however, radon and other soil gases will be pulled in with the negative pressure, and they are what we don’t want in houses.

  1. Supply-only mechanical ventilation

As what you can read from the name, you can use a fan to bring in fresh air, in your house, there must have some cracks and air-leakage sites which can let the stale air escape through. By using the ducts, you can disperse the air supply which may be delivered to one location, another way is to supply the air to the ducted distribution system which has a forced-air heating system for dispersal. It is better for a supply-only ventilation system to keep radon and other contaminants from entering the house. However, the problem of condensation and moisture will occur on the wall and ceiling cavities in which moisture-laden air will be forced.

  1. Balanced ventilation

A balanced system can separate fans to drive both inlet and exhaust airflow, which provide much better ventilation. We can use this system to control the resource of fresh air, the delivery of fresh air and the location of air which will be exhausted. There are two types of balanced ventilation systems, they can be point-source and ducted. In the spaces that are most lived such as living room and bedrooms, we need use ducted systems to deliver fresh air; in the places that moisture or pollutants are generated such as bathrooms, kitchen and hobby room, we need use the ducted systems to exhaust indoor air.

  1. Balanced ventilation with heat recovery

If you want to make sure that the outgoing house air can precondition the incoming outdoor air, you need locate separate fans which introduce fresh air and exhaust indoor air together and include an air-to-air heat exchanger. This air-to-air heat exchanger which is also called a heat-recovery ventilator or HRV, colder climates will come in through it. ERV, energy-recovery ventilator, is a slightly different version which can transfer moisture as well as heat from one airstream to the other. In this way, we can keep more of the desirable humidity in the house in the winter and reduce in the summer.


There are too many ways to ventilate your house, you can learn more through the Internet and other media, even you can learn some knowledge from your neighbors. As a matter of fact, ventilation of your basement is as much important as your house on the ground. There are many machine and steel pipes in your basement, so if there is no good ventilation, the moisture air will be gathered, which is terrible for the machine and steel pipes.

So it is important to ventilate your house, especially the new house, there are a lot of harmful air in your new house, we usually suggest that you need to wait for at least two weeks before moving in, and during this time, you need make sure the good ventilation.

Ways to Ventilate your House

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