PC Slower Than It Used to Be?
Recommended Free Tools
Outbyte PC Repair · freeA free scan shows the junk files, broken settings and background clutter dragging Windows down - then fixes them in one click.
Run a Free PC Scan →ThatPainter is reader-supported. When you buy through links on our site, we may earn an affiliate commission. Learn More
A whole-house fan can cool a home quickly when the outdoor air is cooler than the rooms inside. Installed at the ceiling below a vented attic (or connected by ducts to an outdoor exhaust), it pulls fresh air through open windows and pushes warm indoor air out. That is different from air conditioning: the fan does not refrigerate or dehumidify, so it only works well when the weather, humidity, venting and house design cooperate.
The best choice starts with climate and airflow calculations, not a fan’s marketing name. Use an independently rated HVI-916 airflow figure, verify that the attic has enough net-free vent area, provide sufficient open window area, and address combustion-appliance and depressurization risks before installation. The sections below show how to make those checks and compare traditional, insulated-damper, ducted and roof-mounted designs.
As an Amazon Associate I earn from qualifying purchases.
Quick wins for a faster PC:
Repair Windows errors before they cause bigger problemsFix Now →Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Clear out junk files and repair common Windows errorsFree Scan →How a whole-house fan cools a home
The fan is usually mounted in a central ceiling between the living space and attic. Opening windows creates the intake path. The fan draws outdoor air through those windows, sweeps heat from rooms and furnishings, and exhausts the warmed air into a vented attic or, in some designs, directly outdoors. Air movement across occupants also improves comfort, while flushing heat can pre-cool the building’s floors, walls and furniture before the next hot day.
Because the system moves existing air rather than conditioning it, outdoor conditions determine the result. It is most effective after sunset, overnight and in the early morning, when outside temperature and often the building’s heat load are lower. It cannot remove moisture, so a muggy evening may feel uncomfortable even if the thermometer is favorable. If the outdoor air is hotter than the indoor air, operating the fan adds heat instead of removing it.
#1 Best Overall
- COMPLETE 5-PIECE BRUSH SET FOR EVERY PAINTING TASK — Includes 1 Inch Flat, 1.5 Inch Angle, 2 Inch Flat, 2 Inch Angle Stubby, and 2.5 Inch Angle brush giving you every size professional painters use daily. Get all 5 for less than the price of a single brush from hardware store brands — professional grade performance at a fraction of the cost. Perfect for walls, trim, cabinets, doors, furniture, and detailed cutting-in work on any project.
- ZERO BRISTLE LOSS — GUARANTEED BY PRECISION ADHESIVE BONDING — Every bristle is locked in place with precision-set adhesive that keeps them in the brush — not in your paint job. The coated steel ferrule provides structural support while the adhesive bond ensures clean performance on every stroke. Premium SRT synthetic filaments load more paint and release it evenly for a smooth streak-free finish on walls, ceilings, and trim. Works with latex, oil-based paint, primer, sealer, and wood stain.
- INCLUDES THE ANGLE STUBBY MOST SETS LEAVE OUT — Professional painters know the 2 Inch Angle Stubby is the go-to brush for tight cabinet interiors, window sashes, inside corners, and detailed trim where standard angle brushes are too long. Combined with the 1.5 and 2.5 inch angle sash brushes you have precision cutting-in covered at every scale — baseboards, crown molding, door casings, and ceiling lines.
- FLAT BRUSHES FOR BROAD SMOOTH COVERAGE ON ANY SURFACE — The 1 and 2 inch flat brushes deliver even coverage on walls, furniture, shelving, doors, fences, decks, and wood surfaces. Ideal for applying primers, stains, varnishes, polyurethane, and specialty coatings. Solid wood handles provide all-day comfort and control for both professional contractors and weekend DIY homeowners tackling interior or exterior painting projects.
- TRUSTED BY PROFESSIONAL PAINTERS AND CONTRACTORS NATIONWIDE — Pro Grade delivers professional-grade results at a price that makes sense for crews who go through brushes on every job. Ideal for property managers, remodeling contractors, apartment turnover crews, maintenance teams, and commercial painting operations. Backed by thousands of verified reviews from working painters. Washable and reusable for multiple projects.
Do not operate a whole-house fan at the same time as air conditioning. The fan can exhaust air that the air conditioner just cooled, wasting energy and potentially upsetting the home’s pressure balance. Turn the fan off and close its openings before switching to mechanical cooling.
Is your climate a good match?
The U.S. Department of Energy’s Building America guidance says whole-house fans can work in many climates, but gives two useful screening rules: cooling-season nighttime temperatures below about 67°F and a day-to-night temperature swing greater than 25°F. These are guide-level rules of thumb, not guarantees. A home in a drier climate may benefit with a smaller temperature swing, while high humidity can make a seemingly cool night feel clammy and limit how often the fan is useful.
Check a typical summer day
- Compare the indoor temperature you want to maintain with the forecast outdoor temperature after sunset.
- Check overnight relative humidity and dew point; a cool but very humid night may not improve comfort.
- Look for a dependable evening-to-morning temperature drop rather than an occasional cool front.
- Confirm that local smoke, pollen or outdoor-air concerns will not make open-window operation unacceptable.
If outdoor air is rarely cooler than the house, a whole-house fan is unlikely to be a primary cooling system. It may still provide shoulder-season ventilation, but sizing it as a substitute for air conditioning would be a poor fit.
Size the fan from conditioned volume
Choose the fan using its HVI-916 rated cubic feet per minute (CFM), not only an advertised “free-air” or maximum figure. Building America compiles a broad target of 12 to 23 air changes per hour (ACH), equivalent to about 0.2 to 0.375 CFM for every cubic foot of conditioned volume. For homes with 8-foot ceilings, the same guidance is approximately 1.5 to 3 CFM per square foot of floor area. Climate, solar exposure, internal heat gains and whether the fan is supplemental or the main evening-cooling strategy all affect where you should land in that range.
Rank #2
- Great Value Pack Artist Paint Brushes: Soucolor 20 brushes in 10 sizes professional paintbrushes set — no shedding, holds paint well, cleans easily, Acrylic, watercolor, oil, gouache, Halloween pumpkin decoration & face painting, rock painting, ceramics. Fantastic high quality gifts for creative, artistic siblings to share!
- Awesome Set of Paint brushes: Professional paint brushes can cover all of your needs. The multi-purposed brushes are ideal for Watercolor, Oil, Gouache, enamel, Acrylic Painting, Body, Nail, Face Painting, Miniature, Model, Wood, Glass, Cup, Ceramic, Fine work, Art class, Craft Art Painting, DIY Art Crafts etc.
- Soft and long-lasting: The bristles are soft and strong, with nickel metal ferrules and blue wooden handles. After cleaning, the bristles will become soft and fluffy again and will not fall off.
- Easy to clean: it’s very convenient to Wash well in soap and water. Retain shape after drying. the brushes hold up very well. Nice selection to beginners and professionals. Keep them clean and they last a long time.
- Halloween Pumpkin Ceramic Crafts Supplies: A Great painting gift for family, friends, kids, girls, women, student, classmate, teacher. For using in school, travel or used in the home and office.
Calculate your home’s volume
- Measure or obtain the conditioned floor area in square feet.
- Determine the average ceiling height in feet, including rooms with vaulted or two-story sections as appropriate.
- Multiply area by average height to get conditioned volume in cubic feet.
- Multiply that volume by 0.2 for the lower guide value and by 0.375 for the upper value.
- Compare the resulting range with available HVI-916 ratings and your climate and ventilation limits.
Example: a 1,500-square-foot house with 9-foot ceilings has 13,500 cubic feet of conditioned volume. Applying the guide’s range gives a suggested capacity above 2,700 CFM and below 5,060 CFM. That is a starting range, not a mandate to buy the largest fan. A qualified installer can account for unusually high ceilings, strong solar gains, tight construction and the amount of cooling expected from windows alone.
| Input or guideline | Value | How to use it |
|---|---|---|
| Air-change target | 12–23 ACH | Broad Building America guidance range for whole-house-fan sizing. |
| Volume-based target | 0.2–0.375 CFM per cubic foot | Multiply by conditioned volume, then select an HVI-916 rated fan. |
| 8-foot-ceiling shortcut | About 1.5–3 CFM per square foot | Quick estimate only; adjust for ceiling height and house conditions. |
| Illustrative 1,500-square-foot, 9-foot home | 13,500 cubic feet; more than 2,700 and less than 5,060 CFM | Example calculated from the guidance range, not a universal prescription. |
Provide enough attic and window vent area
Airflow is limited by the smallest opening in the path. Building America recommends at least 1 square foot of net-free attic vent area for every 750 CFM of fan capacity. “Net-free” means the actual unobstructed area after louvers, insect screens and framing are accounted for. If a vent’s screen or louver cuts its free area roughly in half, you may need about twice its gross opening area to reach the target. Ask for the manufacturer’s net-free-area rating rather than estimating from outside dimensions.
The same guidance recommends at least 4 square feet of screened, open window area per 1,000 CFM. Spread openings among several rooms when possible so air travels through the occupied space instead of taking one short route from a nearby window to the fan.
| Airflow | Minimum net-free attic vent area | Minimum screened open-window area |
|---|---|---|
| 1,000 CFM | 1.33 square feet | 4 square feet |
| 2,000 CFM | 2.67 square feet | 8 square feet |
| 3,000 CFM | 4 square feet | 12 square feet |
| 4,000 CFM | 5.33 square feet | 16 square feet |
| 5,000 CFM | 6.67 square feet | 20 square feet |
These are minimum planning values, not permission to ignore local code. Too little attic vent area restricts the fan, increases noise and can force hot attic air backward through ceiling leaks. If the existing vents cannot meet the requirement, budget for additional soffit, gable, ridge or roof venting designed for the attic and climate.
Rank #3
- 【All sizes of art brushes】: The 10 sizes of multi-functional brushes have various shapes, making the mixing color easier, which is very suitable for artists, students, teenagers, children and painters at all levels. Wonderful Present ideas for friends and family who like painting!
- 【general brush set】: Professional paint brush can meet all your needs. Multifunctional brush is very suitable for watercolor, oil, gouache, acrylic painting, body, nail, face painting, miniature, model, ceramics, arts and crafts painting, etc.
- 【high quality process】: It is designed with anti falling bristles, anti-rust nickel ferrule and solid wood handle. You can use the brush to focus on the painting and always be creative.
- 【easy to maintain】: After using the brush, it is very convenient to clean the brush with warm soapy water and reshape the tip of the brush. Air dry the brush and place it on top of the top for long use.
- 【100% satisfaction guarantee - buy now】1 packs of set brushes, you can also get friendly customer service, any questions feel free to contact us, within 24 hours to help you! There is no risk in buying our paint brush kit.
Choose a design that fits your house
Whole-house fans are not one uniform product. The fan location, damper, duct path and vibration treatment determine comfort, air leakage and installation work.
| Design | Strengths | Trade-offs and fit checks |
|---|---|---|
| Traditional ceiling fan | Usually the simplest, least expensive layout; high airflow directly into the attic. | Can transmit motor noise and vibration; the ceiling opening may leak when off unless it has an effective cover or damper. |
| Insulated-damper model | Built-in dampers or insulated covers improve the air seal and reduce winter heat loss. | Verify that the damper closes fully, has adequate insulation, and fits the framing opening. |
| Ducted remote fan | A curved acoustic duct and remote suspension can move the motor away from living spaces and reduce noise transmission. | Requires attic or roof space for the duct, supports and bends; pressure losses can reduce delivered airflow. |
| Roof-mounted or direct-outdoor design | Exhausts outdoors without relying on the attic as the discharge plenum; useful where attic venting is difficult. | Needs weatherproof roof work, flashing and an outdoor termination; confirm structural and service access requirements. |
Before selecting a model, measure joist spacing, the proposed ceiling opening, attic height, access route and clearance around the fan. Determine whether framing must be altered, whether the electrical panel can support the circuit, and whether a switch, timer or multi-speed control is included. Installation labor and any vent upgrades can cost more than the fan itself.
Seal the opening when the fan is off
An inactive fan opening is a direct pathway for attic heat, winter air and contaminants unless it is sealed. Older Department of Energy guidance identifies this as a potential thermal loss. ENERGY STAR’s 2007 builder guidance specifies a fully gasketed insulated cover with at least R-5 value. Treat that as historical guidance and follow the current fan manufacturer’s instructions; do not add insulation, block a damper or alter a fire-rated assembly in a way the equipment documentation does not permit.
Look for a factory-integrated insulated damper or cover. If the fan does not include one, use only a compatible accessory confirmed by the manufacturer. Inspect the gasket after installation and whenever the fan is serviced: a warped panel, torn seal or blocked damper can defeat the intended air barrier.
Rank #4
- Bates paint brushes come in a convenient 6 pieces with 3 flat and 3 angled bristle styles, including (1”, 1.5”, 2”) flat and (1.5”, 2”, 2.5”) angled bristles, perfect for tackling any surface painting or staining job.
- The sturdy natural bristles of each brush are designed to hold more paint, creating a smoother finish with fewer streaks and saving you time on the job.
- The lightweight wooden handles provide extra comfort and ease during long painting processes like walls, trims, cabinets, and doors.
- These versatile brushes are ready-to-use, easy to clean, and can be reused multiple times, making them economical as well as reliable tools for any painting project.
- Bates paint brushes can be used for both oil-based paints as well as latex stains and are ideal for home or commercial projects such as decks, fences or DIY painting jobs.
Address depressurization and combustion hazards
A high-flow fan with too few windows open can depressurize the house. The resulting pressure difference may pull air from a garage, crawlspace or other contaminated area, and it can backdraft an atmospheric combustion appliance. This is a safety issue, not merely a comfort problem.
Safety checks before the first run
- Identify gas- or oil-fired water heaters, furnaces, boilers, fireplaces and other atmospheric-combustion appliances.
- Ask a qualified installer whether the equipment requires dedicated makeup air, a pressure test or an interlock that prevents simultaneous operation.
- Air-seal unwanted pathways to garages, crawlspaces and pollutant sources.
- Open the required windows before starting the fan; never rely on a partly open door as the only intake.
- Close fireplace doors and dampers unless the appliance is specifically designed and approved for the operating condition.
- Follow local mechanical, electrical and fire codes and the fan’s installation instructions.
Because rules vary by jurisdiction and appliance type, have a professional verify the installation when combustion equipment is present. Stop using the fan if you notice exhaust odors, soot, spillage, unusual drafts or a carbon-monoxide alarm.
Free tools Windows power users keep installed
One-click scans. No signup required.
Plan the operating sequence
- Wait until outdoor air is cooler than the indoor air and humidity is acceptable.
- Open enough windows to meet the airflow requirement, distributing them through the occupied rooms.
- Close fireplace dampers and doors, and ensure combustion-safety measures are active.
- Start the fan at a lower speed if available, then increase it only if the airflow path remains quiet and stable.
- Run it long enough to flush heat from the house and pre-cool its mass; turn it off when outdoor air becomes warmer or more humid than the indoor air.
- Close and latch windows, then close the fan’s insulated damper or cover before using air conditioning.
A timer or thermostat control can prevent the fan from running into a hot morning, but controls do not replace the need to open windows and manage combustion appliances. Place switches where occupants can see the operating status and label any interlock clearly.
Noise, vibration and comfort details
Noise complaints usually come from motor vibration, turbulent airflow, loose grilles or an undersized vent path. A direct ceiling fan transmits sound through framing more readily than a remote ducted unit. Curved acoustic ducting, flexible hangers and a rigid, well-supported grille can reduce transmission, but bends and restrictive grilles also add resistance. Compare published sound ratings only when the test conditions and airflow are comparable.
Best Value
- 2 Inch Angled Paint Brush for Precision Cutting-In – Designed for clean, sharp lines around trim, baseboards, ceilings, corners, and detailed edge work. The perfect size for control and coverage.
- Value 3-Pack for Pros & DIY Projects – Includes three professional 2-inch angled sash brushes — ideal for contractors, remodelers, and homeowners tackling multiple rooms or repeat paint jobs.
- Smooth Results on Walls, Trim & Cabinets – Great for interior wall painting, cabinet edges, furniture projects, and trim work where a smooth finish and crisp control matter most.
- Works with Latex Paint, Oil-Based Paint & Stains – Premium synthetic filaments hold more paint, reduce streaks, and provide a clean finish with latex paints, oil coatings, and wood stains.
- Works with Latex Paint, Oil-Based Paint & Stains – Premium synthetic filaments hold more paint, reduce streaks, and provide a clean finish with latex paints, oil coatings, and wood stains.
Keep furniture, insulation and stored items away from the fan housing and attic vents. Confirm that the grille has the manufacturer’s required clearance and that attic insulation cannot fall into moving parts or dampers. If bedrooms are the main nighttime spaces, consider a quieter lower-speed setting or a ducted layout rather than simply buying a larger, faster fan.
Energy use and cost expectations
A whole-house fan generally uses far less power than compressor-based air conditioning because it moves air with a motor instead of refrigerating it. However, the available DOE fact sheet is from 1999 and lists roughly 120–600 watts and about 1–5 cents per hour under the electricity assumptions of that period. Those figures are historical illustrations, not current operating prices or a promise of savings. Your current rate, fan speed, runtime, duct resistance and climate determine actual cost.
The Tool Desk
Outbyte PC Repair FREERepair Windows errors before they cause bigger problemsFix Now →Outbyte Driver Updater FREEFix the driver behind crashes, sound loss and screen glitchesFind Drivers →Budget for the complete job: fan, controls, electrical work, framing, attic vent additions, roof or wall terminations, combustion-safety measures and repair of the ceiling finish. A lower-priced fan that requires extensive vent or framing work may cost more installed than a better-sealed design that fits existing openings.
Troubleshoot poor performance
Little airflow or rooms stay hot
- Check that the fan’s HVI-916 rating matches the house volume and that all required windows are open.
- Measure net-free attic vent area; screens and louvers may have reduced the effective opening.
- Look for blocked attic vents, closed dampers, crushed ducts or insulation covering the intake grille.
- Confirm that air is moving through the rooms rather than taking a short path from one nearby window.
Hot attic air or odors enter the house
- Turn the fan off and inspect the attic discharge and ceiling opening for backflow.
- Increase vent area if the attic is pressurized, and repair ceiling penetrations and the fan’s gasket.
- Check for garage or crawlspace pathways and have combustion appliances tested for spillage.
Excessive noise or vibration
- Verify that the housing, grille, supports and duct hangers are tight and correctly installed.
- Reduce speed temporarily; if noise drops sharply, the vent path may be restrictive or the fan oversized for available openings.
- Consider acoustic ducting or remote suspension if the motor is directly over a bedroom.
Whole-house fan buying checklist
- Climate: nighttime temperatures, day-to-night swing and humidity support frequent operation.
- Airflow: HVI-916 rated CFM falls within the calculated range for conditioned volume.
- Venting: attic net-free area and screened window area meet the airflow requirements.
- Safety: combustion appliances, makeup air, fireplace dampers and pressure effects have been evaluated.
- Fit: joist spacing, ceiling opening, attic access, duct route and service clearance are confirmed.
- Sealing: an insulated, gasketed damper or cover is included or manufacturer-approved.
- Comfort: noise, vibration, grille design and bedroom location are acceptable.
- Installation: electrical circuit, controls, framing, vent upgrades and total labor are priced together.
Bottom line
Choose a whole-house fan when your home regularly gets cool, reasonably dry outdoor air at night and has enough windows and attic venting to carry the airflow safely. Size it from conditioned volume and an HVI-916 rating, then select the quietest sealed design that fits your framing and attic. Treat combustion safety, depressurization and the closed-season air seal as essential installation requirements. Used in the right weather and kept separate from air-conditioning operation, a correctly installed fan can flush out stored heat quickly; in hot, humid or poorly vented conditions, it will not deliver the same result.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
