Introdución
The AprilAire 700M is a whole-house fan-powered evaporative humidifier designed to integrate with your home's HVAC system. It provides optimal humidity levels throughout your entire home, covering up to 5,300 square feet in tightly built homes with a capacity of 18 gallons per day. Maintaining proper humidity (between 40% and 60%) can help reduce respiratory infections, dry skin, and static shock, while also preserving wood furnishings and preventing damage from dry conditions.

Figure 1: AprilAire 700M Whole-House Fan Powered Humidifier
Video 1: AprilAire Humidification Benefits Educational Overview. This video explains the advantages of maintaining optimal humidity in your home.
Configuración (Instalación)
Installation of the AprilAire 700M humidifier involves integrating it with your existing HVAC system. While detailed instructions are provided in the box, professional installation is recommended. The unit is typically installed on the supply plenum of your furnace.
Video 2: Installing AprilAire 700 Automatic Fan Powered Humidifiers. This video demonstrates the installation process for the AprilAire 700 series humidifier.
Pasos de instalación terminadosview:
- Mount & Trace Template: Position the provided template on the supply plenum, ensuring it is level and above the evaporator coil for optimal airflow. Trace the outline onto the ductwork.
- Cut Out the Plenum: Use appropriate tools (e.g., tin snips) to cut along the traced lines, creating the opening for the humidifier.
- Secure Unit to Duct: Insert the humidifier frame into the cut opening. Rotate the internal levers to secure the unit firmly to the ductwork, preventing shifting.
- Seal Unit to Duct: Apply caulk, sealant, or metal duct tape around the edges of the humidifier frame where it meets the ductwork to prevent air leaks.
- Attach Water Line: Connect a 1/4-inch water line to the humidifier's water inlet. It is recommended to use a SharkBite valve instead of the provided saddle valve for a more secure connection. Ensure a tight seal to prevent leaks.
- Conecte os cables condutores: Connect the lead wires from the humidifier to the furnace control board and the humidistat according to the wiring diagram in your instruction manual. This typically involves connecting to the 'C' (common) and 'W' (24V auxiliary) terminals on the furnace, and then to the humidistat.
- Attach Drain Hose: Connect a 1/2-inch drain line from the humidifier's drain port to an appropriate drain. Refer to local codes for proper drainage installation.
- Cable de alimentación para conectar: Connect the humidifier's power cord to a 120V AC outlet.

Figure 2: AprilAire 700M Humidifier being installed on a furnace duct.
Compoñentes incluídos:
- AprilAire 700M Humidifier with built-in fan
- Transformador 24 VAC
- Manual Humidifier Control with Sensor
- Saddle Valve (alternative SharkBite valve recommended)
- Válvula Solenoide
- Model #35 Water Panel
- Installation Instructions and Template
- Cable de alimentación de 5 pés

Figure 3: Components included in the AprilAire 700M box.
Instrucións de funcionamento
The AprilAire 700M features a manual control to set and maintain desired humidity levels in your home. The built-in fan pulls heated air directly from the furnace through the humidifier, distributing humidified air throughout your living space.
Axuste dos niveis de humidade:
- The manual humidifier control includes a dial to set the desired percentage de humidade.
- Optimal indoor humidity levels are generally between 40% and 60%. Adjust the dial to your preferred setting.
- The control also features settings based on outdoor temperature to prevent condensation on windows. Adjust the humidity setting lower as outdoor temperatures drop.

Figure 4: AprilAire Manual Humidifier Control.
Ignorar Damper:
The AprilAire 700M includes a built-in bypass damper. Este damper should be set for the season:
- Winter Setting: Abre o damper to allow air to flow through the humidifier.
- Summer Setting: Pecha o damper when the humidifier is not in use (e.g., during cooling season) to prevent air from bypassing the cooling coil.

Figura 5: Interno view of the AprilAire 700M humidifier with built-in fan.
Mantemento
Regular maintenance ensures optimal performance and longevity of your AprilAire 700M humidifier. The primary maintenance task is replacing the water panel.
Water Panel Replacement:
The Model #35 Water Panel should be replaced annually for best performance. The frequency may vary depending on your water quality.
- Desconecta a unidade: Always disconnect power to the humidifier before performing any maintenance.
- Retire a tapa: Unlatch the bottom clip and rotate the cover upwards, then lift it off.
- Remove Water Panel Housing: Rotate the water panel housing downwards and lift it out of the unit.
- Assess Housing Unit: Inspect the housing for excessive mineral buildup or wear. If heavily scaled or damaged, consider replacing the entire housing unit or a maintenance kit.
- Replace Water Panel: Unclip the old water panel from the housing and discard it. Insert a new Model #35 Water Panel, ensuring the colored markings are at the top.
- Re-install Housing Unit: Place the water panel housing back into the humidifier, ensuring the drain spud is at the bottom and the notch for the feed tube is correctly aligned.
- Reconnect Feed Tube: Reattach the water feed tube to the top of the water panel housing.
- Re-attach the Cover: Hook the top clips of the cover onto the humidifier, then push the bottom of the cover until it latches securely.
Video 3: How to Change AprilAire Water Panel - 700 Series Humidifiers. This video provides a step-by-step guide for replacing the water panel.

Figure 6: Compatible AprilAire Water Panel Humidifier Filter.
Resolución de problemas
If your AprilAire 700M humidifier is not operating as expected, review os seguintes problemas comúns:
- No Humidification:
- Ensure the unit is plugged in and receiving power.
- Check the manual control setting; it may be set too low or to 'Off'.
- Verify the water supply valve is open and water is flowing to the unit.
- Inspect the water panel for excessive mineral buildup or damage; replace if necessary.
- Confirm the furnace fan is operating when humidification is desired.
- Fugas de auga:
- Check all water line connections for tightness, especially at the humidifier inlet and saddle valve.
- Ensure the drain hose is properly connected and free of kinks or blockages.
- Verify the humidifier is securely sealed to the ductwork.
- A unidade non se acende:
- Confirm the power cord is securely plugged into a functional outlet.
- Check the wiring connections to the furnace and humidistat against the installation diagram.
- Ensure the furnace is operating and calling for heat, as the humidifier typically activates with the furnace fan.
Para problemas persistentes, consulte cun técnico cualificado de climatización.
Especificacións
| Característica | Detalle |
|---|---|
| Marca | AprilAire |
| Nome do modelo | 700M (Humidifiers Evaporative) |
| Característica especial | Adjustable Humidity Control, Auto Shut Off, Humidistat |
| Cor | Gris |
| Cobertura da superficie do piso | Up to 5,300 sq. ft. (tightly built homes); 4,200 sq. ft. (general) |
| Modo de operación | Evaporativo |
| Dimensións do produto | 11.35" D x 15.91" W x 18" H |
| Peso do elemento | 11.7 libras |
| Tipo de habitación | Whole-House |
| Compoñentes incluídos | 24VAC Transformer, Humidifier Control, Valves, Instructions, 5ft Cord |
| Voltage | 120 voltios (CA) |
| Wattage | 120 vatios |
| Capacidade | 18 Gallons per Day (GPD) |
| Fabricante | Corporación de Produtos de Investigación |

Figure 7: AprilAire 700M Humidifier Dimensions.

Figure 8: AprilAire Model 700 Home Sizing Chart.
Garantía
Specific warranty details for the AprilAire 700M Humidifier are typically provided with the product documentation. Please refer to the warranty card or the official AprilAire websitio web para obter a información máis actualizada e detallada sobre a garantía.
Apoio
For further assistance, technical support, or to locate a professional installer, please visit the official AprilAire website or contact their customer service. You can find contact information and additional resources at Aprilaire.com/contact.





