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When Is the Best Time to Pressure
Wash a House?

Everything You Need to Know

Pressure washing is a powerful and efficient way to clean and maintain the exterior of your home, but the best time to use a pressure washer can vary depending on the season and weather conditions.

This article explores the best seasons and weather conditions to use a pressure washer and tips and techniques to make the most of your pressure washing experience.

Whether you’re trying to remove dirt and grime from your driveway, clean your deck, or restore the exterior of your home, understanding the best time to pressure wash your home can help you achieve the best results and prevent any avoidable damage.

Quick Answer
The best time to pressure wash a house depends on various factors, including the season, weather, and temperature.

Many experts agree spring is one of the best seasons to pressure wash your home. The milder weather and temperatures in spring make removing dirt and grime build-up from the previous winter months easier, as well as eliminating mold and mildew growth before they cause permanent damage.

Summer can also be a good time for pressure washing, as warmer temperatures and longer days provide better drying opportunities. However, we recommend avoiding the hottest hours of the day and taking the necessary precautions, such as staying hydrated and wearing sunblock.

Fall is also a good choice for pressure washing, as it allows you to remove leaves and debris before they trap moisture and cause damage to your home.

It is also possible to pressure wash in winter, but it can be less effective and more dangerous due to colder temperatures, potential freezing issues, and icy conditions.

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What Is the Best Season for Pressure Washing?

Pressure Washing in Spring

Many experts agree spring is one of the best seasons to pressure wash your home.

Firstly, the weather is typically milder in spring, with fewer extreme weather events such as lightning, heavy rain, or hail storms preventing you from using your pressure washer.

The temperature is usually more favorable during spring, too. You’re less likely to have issues with water freezing, like during winter, or problems with higher temperatures leading to surfaces drying too quickly, as can occur during the summer months.

It’s common for dirt, grime, and even salt to build up on your home’s exterior over winter, and pressure washing during the spring allows you to remove this early. Not only will this freshen up your home ready for summer, but it also removes these potentially harmful contaminants that could damage your home’s exterior surfaces if not cleaned off.

Other areas of your home, for example, the sidings, gutters, patio, and roof, are also susceptible to mold and mildew growth over the winter months. With a bit of spring cleaning using a pressure washer, you can remove any mold and mildew stains before they permanently stain and discolor these surfaces.

Finally, if your home needs external maintenance, using a pressure washer during the spring months can be a great way to clean and prepare any surfaces ahead of any necessary painting or staining, either during spring or early summer.

Pressure Washing in Summer

Summer can be an excellent time to use a pressure washer as the weather is typically better, and the warmer temperatures make drying faster.

In addition, the days are longer during summer, providing more light during the day to let you complete even the biggest pressure cleaning job.

If you decide to pressure wash during summer, we recommend completing the work in the morning or evening to avoid the hottest hours, taking regular breaks, staying hydrated, and wearing sunblock to protect yourself.

By avoiding the hotter afternoon hours, there’s more chance of avoiding direct sunlight, which can cause water spots or streaks on the surface you’re cleaning.

Pressure Washing in Fall/Autumn

Like spring, fall is also a good choice for pressure washing, given the milder temperatures versus summer or winter.

During fall, leaves and debris can quickly gather on your home’s exterior surfaces, including roofs, gutters, and window sills, especially after strong winds.

If you don’t pressure wash or, at the very least, manually clean and remove the leaves and debris ahead of winter, you risk these trapping moisture which can lead to the growth of potentially harmful and damaging mold, which could cause permanent damage to your home and health risks.

Excessive amounts of leaves and debris can also lead to clogged gutters, risking water ingress during the upcoming wetter winter months, which could lead to costly repair bills later on.

Pressure washing during the fall is a good option to ‘winterize’ your home, as by completing some light maintenance ahead of any harsh winter weather, you will likely avoid any damage or significant maintenance headaches later.

Pressure Washing in Winter

You can pressure wash during winter, but it may not be as effective as during warmer months because of colder temperatures.

Low temperatures can cause the water to freeze quickly, making removing dirt and grime from surfaces harder. Low temperatures above freezing can also cause surfaces to take longer to dry, which could lead to mold and mildew growth.

If you decide to pressure wash in the winter, it’s a good idea to use a hot water pressure washer or a chemical solution that can work in lower temperatures, taking care to prevent your pressure washer or hoses from freezing.

It’s also important to note that, depending on how cold it is, you might need to routinely de-ice the faucet or your pressure washer’s water source. Where the water source is frozen, your pressure washer won’t have access to sufficient amounts of water, which can make any cleaning ineffective at best and damage your pressure washer’s internal components at worst.

Finally, to prevent injury, it’s important to exercise caution when it comes to slippery surfaces from water freezing on walkways and driveways.

We recommend scheduling any pressure washing in spring and autumn or on summer days when the temperature is milder.

There are exceptions to this, of course, and provided you avoid inclement, harsh weather and extremely cold or hot days, it should be possible to pressure wash.

In general, however, you should avoid pressure washing during heavy rain or storms regardless of season, and you shouldn’t pressure wash during hotter summer days (typically above 80°F or 27°C) and colder winter days (typically below 40°F or 4°C).


When Is the Best Time to Pressure Wash a House? – Other Considerations

Wait for Favorable Temperatures

We recommend pressure washing in temperatures between 50-80°F (10-27°C) and avoiding temperatures below 40°F (4°C).

Milder temperatures will help avoid surface damage from freezing and thawing of the water that typically occurs during winter, for example. Milder temperatures will also improve the drying conditions versus the warmer temperatures often found in summer, which can speed up evaporation and lead to streaks and water spots on cleaned surfaces.

Select the Best Time of Day

In general, it’s best to pressure wash in the morning or evening when the temperature is at its mildest, and it’s usually possible to avoid direct sunlight, which can cause water spots or streaks as the water dries.

We don’t recommend pressure washing too early or late, however, especially if it’s dark and you can’t see what you’re doing, risking damage or injury, or where there’s the possibility of disturbing other people.

Wait for Favorable Weather Conditions

The best time to pressure wash a house is during mild weather, with little chance of inclement weather such as rain or high winds.

Spring and fall are generally considered the best seasons for pressure washing, given that the weather is typically milder.

Wait for Favorable Humidity Levels

High humidity levels can make it difficult for surfaces to dry properly, leading to potential mold and mildew growth.

It’s usually best to pressure wash during periods of low humidity.

Avoid Direct Sunlight

Avoid pressure washing in direct sunlight as it can cause water spots or streaks on the surface.

It’s usually best to pressure wash in the morning or evening when the sun is less intense.

Protect Plant Life

It’s worth considering the surrounding plant life when scheduling pressure washing.

If you have delicate plants or flowers near your house, it’s best to pressure wash the areas around these when they are dormant or not in bloom.

Clean Around Your Personal Schedule

You should consider also your schedule before completing any pressure cleaning.

It’s best to complete the pressure washing when you have the time and energy or when you’re available to supervise the professional undertaking the work.


Winter Pressure Washing Tips

Winter can be a challenging time for homeowners who want to pressure wash their homes. Cold temperatures, snow, and ice can make it challenging to clean outdoor surfaces effectively.

Although we recommend pressure washing during more favorable seasons, such as spring or fall, you can still pressure wash your home during the winter months and keep it looking clean and well-maintained with the right tips and techniques:

Prioritize Safety

First and foremost, safety should always be a top priority when pressure washing in the winter.

The cold temperatures can make the surfaces slippery and icy, increasing the risk of falls and accidents. Be sure to wear appropriate footwear with good traction, and consider using a salt or sand mixture on any icy surfaces before pressure washing.

Check the Weather

Another safety tip is to keep an eye on the weather forecast.

Pressure washing during a snowstorm or freezing rain is not only dangerous, but it’s also ineffective.

Wait for a clear day with temperatures above freezing to ensure that the water from the pressure washer doesn’t freeze on surfaces, causing damage.

Use the Correct Nozzle

When it comes to actual pressure washing, using the correct pressure and nozzle for whichever surface you’re cleaning is essential. For example, a high-pressure nozzle on delicate surfaces like wood or brick can cause damage, especially during colder weather.

Instead, use a low-pressure nozzle and adjust the pressure accordingly, which will help prevent surface damage during cleaning.

Check the Water Source

It’s important to note that, depending on how cold it is, you might need to routinely de-ice the faucet or your pressure washer’s water source.

Where the water source is frozen, your pressure washer won’t have access to sufficient amounts of water, which can make any cleaning ineffective at best and damage your pressure washer’s internal components at worst.

Focus On Priority Areas

Another tip for pressure washing in the winter is to focus on the areas most prone to dirt and grime. For example, the gutters and downspouts can become clogged with leaves, twigs, and debris during the fall, which can cause water to back up and freeze, potentially causing damage to the gutters or roof.

By pressure washing these areas before the winter, you can prevent potential damage and keep your home looking clean.

Use the Correct Detergent

When it comes to the type of detergent, it’s best to use a detergent specifically designed for pressure washing in colder weather.

These detergents are formulated to work with high-pressure water and can help to remove dirt and grime more effectively.

Be sure to follow the manufacturer’s instructions for the best results, including potentially needing more detergent to compensate for colder temperatures.

Store Your Pressure Washer Properly

Finally, once finished, you should store your pressure washer in a warm and dry place instead of leaving it exposed to the elements outside.

Doing so will protect your pressure washer from any damage and help ensure that it is in good working condition the next time you need it.


Frequently Asked Questions

1. Is It Better to Pressure Wash a House in the Morning or Afternoon?

We recommend pressure washing a house in the morning or evening rather than in the afternoon, especially during hotter climates and seasons and particularly for homes in areas with direct sun exposure.

When pressure washing in the morning or evening, the sun is less intense, and the surface will have a chance to dry before the sun gets too hot, helping to avoid water spots and streaks once the surface dries.

Additionally, the temperature is cooler in the morning and evening, making it more comfortable for the person doing the job.

2. Can Pressure Washing Be Done at Any Time of Year, or Are Specific Seasons More Suitable?

You can technically pressure wash at any time of the year, but there are specific seasons that are considered more suitable.

The best seasons to pressure wash a house are typically spring and fall when temperatures are mild, and there is less chance of inclement weather such as rain or high winds.

During these seasons, the mild temperatures will help avoid surface damage from the freezing and thawing of water that could occur in winter, for example. Also, the lower relative humidity levels and temperatures in spring and fall versus summer typically improve drying conditions, helping minimize streaks or water spots.

We don’t recommend pressure washing during extreme heat or cold, as it could be uncomfortable for the person doing the job, and there’s a risk of injury from slips, trips, or falls where temperatures are too cold and conditions are icy.

We also recommend avoiding pressure washing in areas experiencing drought during long periods of hot weather. Although pressure washing typically uses less water than a conventional hose, it still uses much more than manual cleaning.

3. Can You Pressure Wash on Days With High Humidity?

Relative humidity, or the amount of water vapor in the air, affects the rate of evaporation, in other words, how quickly surfaces dry.

The air is drier when the relative humidity is low, and evaporation occurs faster. In contrast, more water vapor is present when the air is more humid, slowing down evaporation and the drying of surfaces.

High humidity can be a problem during pressure washing because the water can’t evaporate as quickly, causing streaking and water spots, and potentially delaying the use of the cleaned surface.

If you have to pressure wash on a day with high humidity, try to do it in the morning before the sun gets too hot.

4. Are There Any Weather Conditions That Aren’t Suitable for Pressure Washing?

It generally isn’t safe to use a pressure washer during particularly bad or inclement weather, for example:

  • Lightning – It is not safe to be outside during a lightning storm.
  • High Wind – High winds present several hazards when using a pressure washer. These include being struck by objects blown around, slipping and falling due to sudden gusts, and eye injuries from flying debris and dust. Be cautious and avoid using a pressure washer in strong wind conditions to protect yourself from these potential injuries.
  • Heavy Rain – It is not safe to use a pressure washer if you cannot see clearly due to heavy rain. Additionally, if the surface you are cleaning is prone to flooding, it is best to wait until the weather improves.
  • Hail – Although unlikely, heavy hail has the potential to cause damage to your pressure washer, which could cause it to malfunction. There’s also the potential for injury to you, which could occur even during lighter hail.
  • Snow – Pressure washers should not be used in freezing temperatures as ice can damage the internal components. Winterize your pressure washer before winter and store it in a dry location.
  • Extreme Heat – If you are working in very hot weather, monitor yourself for heat illness symptoms and take breaks as needed.

Find a Professional Pressure Washing Company Near You.
You Could Save Up to 40% By Comparing Pressure Washing Quotes.


In Summary

In conclusion, the best time to pressure wash a house depends on various factors, including the season, weather, and temperature.

Spring and fall are typically considered the best seasons for pressure washing as the weather is milder, and longer days provide better lighting. However, summer can also be a good time to pressure wash, as long as you avoid the hottest hours of the day and take the necessary precautions, such as staying hydrated and wearing sunblock. Winter, though, can be problematic for pressure washing. Cold temperatures can cause the water to freeze quickly, making removing dirt and grime from surfaces harder, and potential safety issues can arise from working in icy conditions.

Ultimately, the key is to be mindful of the weather and temperature conditions and to take the necessary precautions to ensure a successful and safe pressure washing experience.


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Author: Jon Maxwell
Senior Writer, ToolCrowd
Jon Maxwell writes about various topics for ToolCrowd, including tool reviews, material advice, common home problems, and general DIY advice and how-to articles. His work has been published in national publications for audiences including consumers, homeowners, and industry experts. Jon has a bachelor's degree in Building Surveying and a master's degree in a branch of Civil Engineering focusing on concrete and steel durability. When he isn't writing for ToolCrowd, Jon enjoys completing DIY tasks in his own home, as well as woodworking in his home workshop, snowboarding, and website development. Contact Jonarrow_right_alt
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