Aprilaire/Research Products

We keep plenty of this genuine Aprilaire #35 Water Panel Evaporator Pad in stock, so you can have the convenience of speedy delivery right to your door!Save when you buy 2 or more. Buy the 10-pack listed below for your best discount.

We keep plenty of this genuine Aprilaire #35 Water Panel Evaporator Pad in stock, so you can have the convenience of speedy delivery right to your door!Buy this 10-pack for your best discount.

Improve the efficiency of your Aprilaire / Space-Gard Model 2200 Air Cleaner with this MERV 11 filter (requires installation of the # 1213 upgrade kit). Traps and permanently removes over 90% of pollen-sized particles (5.0 microns) and over 90% of mold and spore-sized particles (3.0 microns).  Try this efficient filter that you can replace yourself. SelfSeal dramatically reduces air bypass, improving filter performance. ALSO, free yourself from the hassle of the old filter assembly,...

Improve the efficiency of your Aprilaire / Space-Gard Model 2200 Air Cleaner with this MERV 13 filter (requires installation of the new # 1213 upgrade kit). ALSO, free yourself from the hassle of the old filter assembly, and pleat spacers. This new MERV 13 media simply slides into your existing air cleaner. This filter provides a permanent upgrade to more efficient filter that you can replace yourself. NOT for use with Model 2250.

Improve the efficiency of your Aprilaire / Space-Gard Model 2200 Air Cleaner with this MERV 16 filter (requires installation of the new # 1213 upgrade kit). ALSO, free yourself from the hassle of the old filter assembly, and pleat spacers. This new MERV 13 media simply slides into your existing air cleaner. This filter provides a permanent upgrade to more efficient filter that you can replace yourself.  Captures up to 96% OF VIRUS-SIZE AIRBORNE PARTICLES passing through the MERV 16 filter...

Save a chunk of change when you buy this affordable humidifier filter pad! Compatible with all the brand models listed here. Features the same Agion anti-microbial coating. Made in the USA!! Recommended Replacement: Once each season; more often in hard water areas.

Here is is the real Aprilaire #10 Water Panel Evaporator Pad delivered to your door, and fast too! Aprilaire recommends for peak performance replace the water pad annually. Save when you buy 2 or more. Buy the 10-pack listed below for your best discount.

Here is the genuine Aprilaire #10 Water Panel Evaporator Pad delivered to your door, and fast too! Aprilaire recommends for peak performance replace the water pad annually. Buy this 10-pack for your best discount.

This is the genuine Aprilaire # 201 replacement filter media for Aprilaire and Space-Gard air cleaners, models 2200 and 2250. Designed to last up to one to year. Save when you buy two or more! Your best value ($26.90 each) is on a full case of 10, which you may purchase by clicking the link below.

This is the genuine Aprilaire # 201 replacement filter media for Aprilaire and Space-Gard air cleaners, models 2200 and 2250. Designed to last up to one to year. This item is for a case of 10, your best discount.

Here it is - the real Aprilaire #12 Water Panel Evaporator Pad delivered to your door and fast. Your best value is to purchase a case of 10, listed below. Aprilaire recommends for peak performance replace the water pad annually.

Save a chunk of change when you buy this affordable humidifier filter pad! Compatible with all the brand models listed here. Features the same Agion anti-microbial coating. Made in the USA!! Recommended Replacement: Once each season; more often in hard water areas.

Here the genuine Aprilaire #12 Water Panel Evaporator Pad delivered to your door and fast. Your best value is on this case of 10. Aprilaire recommends for peak performance replace the water pad annually.

Improve the efficiency of your Aprilaire / Space-Gard Model 2200 Air Cleaner with this new upgrade kit. The kit includes everything you need to upgrade your filter from a MERV 10 to a MERV 13 efficiency rating - a 65% improvement. This kit replaces filter part number 201, or any other filter you are using in your model 2200 air cleaner. ALSO, free yourself from the hassle of the old filter assembly, and pleat spacers. This new MERV 13 media simply slides into your existing air cleaner. This...

Never run out of filters during the season with the Aprilaire 45 replacement cool mist humidifier water panel that comes in a convenient 2-pack. This Aprilaire humidifier pad is the key component for generating humidity in your Aprilaire 400 humidifier system. The paper filter media absorbs water from the tray while a fan pushes air across the material. This causes air to pick up moisture where it then moves around the room. For best performance replace your filters at least 2 times a season. ...

Genuine replacement Aprilaire inline strainer # 4004 can be conveniently delivered to your door. This strainer is a black plastic piece that is inserted in the inlet side of the solenoid valve, and is designed to prevent debris from entering the solenoid valve.

This filter serves as a convenient, pre-assembled replacement for Research Products Aprilaire / Space-Gard filter # 201, used in models 2200 and 2250. You will still need the plastic inner filter housing, but not the spacers. Also, do not remove the seal kit(pink or white insulation-looking material) from the plastic housing when installing this filter.

The Aprilaire 4021 Humidifier Orifice is a tiny red nylon component that allows a specific amount of water to enter your humidifier. It's designed to regulate the amount of water entering the humidifier from the solenoid valve. Some of the water will evaporate and some performs the important flushing action. This process will keep the water panel clean while reducing maintenance to a minimum. Also known as part number 4021, the Aprilaire humidifier orifice is a unique fit for the Aprilaire 112...

Improve the efficiency of your Aprilaire / Space-Gard Model 2400 Air Cleaner with this MERV 11 filter (requires installation of the # 1413 upgrade kit). Traps and permanently removes over 90% of pollen-sized particles (5.0 microns) and over 90% of mold and spore-sized particles (3.0 microns).  Try this efficient filter that you can replace yourself. SelfSeal dramatically reduces air bypass, improving filter performance. ALSO, free yourself from the hassle of the old filter assembly, and...

Improve the efficiency of your Aprilaire / Space-Gard Model 2400 Air Cleaner with this MERV 13 filter (requires installation of the new # 1413 upgrade kit). Traps and permanently removes over 90% of pollen-sized particles (5.0 microns) and over 90% of mold and spore-sized particles (3.0 microns). Try this efficient filter that you can replace yourself. SelfSeal dramatically reduces air bypass, improving filter performance. ALSO, free yourself from the hassle of the old filter assembly, and...

This genuine Aprilaire replacement solenoid valve # 4040 includes inlet and outlet fittings, and is used on the models listed below. It ensures that the right amount of humidity is delivered into your home, and controls how much moisture enters your humidifier, making it possible to maintain proper humidity levels throughout your home.

The Aprilaire 4231 Humidifier Orifice is a tiny red nylon component that allows a specific amount of water to enter your humidifier. It's designed to regulate the amount of water entering the humidifier from the solenoid valve. Some of the water will evaporate and some performs the important flushing action. This process will keep the water panel clean while reducing maintenance to a minimum. Also known as part number 4231, the Aprilaire humidifier orifice is a unique fit for several Aprilaire...

The Aprilaire  Humidifier Orifice is a tiny white nylon component that allows a specific amount of water to enter your humidifier. It's designed to regulate the amount of water entering the humidifier from the solenoid valve. Some of the water will evaporate and some performs the important flushing action. This process will keep the water panel clean while reducing maintenance to a minimum. The Aprilaire humidifier orifice is a unique fit for several Aprilaire humidifier models. The...

Genuine replacement Aprilaire scale control insert # 4236, delivered right to your door! This insert prevents mineral build up on the water panel pad. The insert will also prevent water from leaving the evaporative section of the humidifier.