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Lead-Free 3/4 in. Union NPT Direct-Connect Mixing Valve
Our Price:$345.94This direct-connect mixing valve is for water-heater installations where users need to control hot and cold water flow. It installs on the water heater hot port and can be used for mixing or...
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Left End/Wall Cap for Hot Water Hydronic Baseboard Covers
Our Price:$17.49This left end/wall cap is a finishing component for buyers maintaining hot water hydronic baseboard cover systems. It covers the left end or wall-side termination of a compatible baseboard cover for...
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Liquid-Filled Vac-Bolt Vacuum Test Gauge, 0–30 in. Hg
Our Price:$64.94This liquid-filled Vac-Bolt test gauge helps HVAC service professionals read vacuum levels on compatible filter canister setups. It supports vacuum checking without disconnecting pump fittings or oil...
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Liquid-Filled Vacuum Pump Test Gauge, 0–30 Hg
Our Price:$47.94This liquid-filled vacuum pump test gauge is designed for oil burner service professionals who need to check vacuum readings during equipment testing and service. Its large dial face helps make...
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Loki 36-Inch Ceiling Fan with LED Light Kit
Our Price:$179.98The Loki 36-inch ceiling fan with LED light kit is designed for people furnishing small rooms such as guest bedrooms, home offices, nurseries, and keeping rooms. It provides air circulation while...
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Low-Limit Circulator Control Aquastat
Our Price:$375.94This low-limit circulator control aquastat is for HVAC maintenance professionals and commercial facilities managing temperature-control equipment. It provides circulator control and low-limit...
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Low-Pressure SPST Refrigerant Pressure Switch, 5 PSI Open / 30 PSI Close
Our Price:$15.99This low-pressure refrigerant pressure switch is for HVAC and refrigeration technicians who need to monitor pressure in systems using HFC, HCFC, or CFC refrigerants. It opens on a pressure fall at 5...
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Low-Pressure SPST Switch, 10 PSI Open/25 PSI Closed
Our Price:$19.49This low-pressure SPST switch is for HVAC technicians and service professionals who need to control equipment operation in response to system pressure. It opens at 10 PSI and closes at 25 PSI for...
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Low-Pressure SPST Switch, 15 PSI Open / 35 PSI Closed
Our Price:$16.74This low-pressure SPST switch is for HVAC technicians and service professionals who need to monitor pressure and control condenser fan cycling. It opens at 15 PSI and closes at 35 PSI to support...
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Low-Pressure SPST Switch, 25 PSI Open / 65 PSI Close
Our Price:$15.24This low-pressure SPST switch is for HVAC technicians and service professionals who need to control equipment response to changing system pressure. It opens at 25 PSI on a pressure fall and closes at...
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Low-Pressure SPST Switch, 5 PSI Open / 20 PSI Closed
Our Price:$18.99This low-pressure SPST switch is for HVAC technicians and service professionals who need to control pressure-responsive equipment operation. It opens at 5 PSI and closes at 20 PSI for condenser fan...
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Low-Pressure SPST Switch, 90 PSI Open/120 PSI Close
Our Price:$17.24This low-pressure SPST switch is for HVAC technicians and service professionals who need to monitor pressure changes in compatible systems. It supports pressure-based control functions, including...
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Low-Profile Circular Exhaust Grille with Mounting Collar for 4-Inch Duct
Our Price:$29.94This circular exhaust grille is designed for ventilation installers and facility teams finishing 4-inch duct openings. It provides a fixed, low-profile grille face along with a collar for mounting...
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Low-Profile Circular Exhaust Grille with Mounting Collar for 6-Inch Duct
Our Price:$39.94This fixed circular exhaust grille is designed for facility maintenance teams and contractors finishing a 6-inch exhaust duct opening. It provides a low-profile white grille face and includes a...
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Low-Profile Condensate Pump, 24 ft Lift, 115V
Our Price:$87.94This low-profile condensate pump is designed for HVAC and boiler applications where condensate must be collected and moved from tight installation areas. It gives maintenance and installation...
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Low-Voltage Motorized Zone Valve, 1 in. Sweat Connection
Our Price:$189.94This low-voltage motorized zone valve is for HVAC installers and maintenance teams controlling hot-water flow in heating systems. Its two-way on/off design helps manage flow to a heating zone.The...
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Lucerna 1 Ultrasonic Tabletop Humidifier, Yellow
Our Price:$86.94The Lucerna 1 ultrasonic humidifier is a tabletop unit for users who want to add moisture to their immediate surroundings while also adding soft ambient illumination. Its yellow finish and compact...
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Lucerna 2 Ultrasonic Humidifier with Ambient Light
Our Price:$96.94This ultrasonic humidifier is for workplace and commercial-space users who want to add moisture to their indoor environment. It provides up to 8 pints of output per day while combining humidification...
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Lucerna 3 Ultrasonic Humidifier, 24 Pints per Day
Our Price:$129.94The Lucerna 3 ultrasonic humidifier is for facilities teams and commercial buyers who want to add moisture to a whole room to help maintain comfort. Its 24-pint-per-day output and dual-fan design...
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Magnetic Compressor Cooler
Our Price:$89.94This magnetic compressor cooler is an HVAC service tool for technicians who need to cool overheated compressors using garden-hose water. Its hands-free design helps support a more efficient cooling...
Climate Control & Air Quality: Find the Right Equipment for Your Space
Whether you're cooling a server room, filtering allergens from a workspace, heating a warehouse, or improving ventilation in a commercial building, this category covers the full range of climate control and air quality equipment. Use the subcategories below to find the right starting point for your project.
Choose your starting point
Popular examples in this category
What Climate Control & Air Quality Equipment Does
These products manage temperature, airflow, and air purity in residential, commercial, and industrial settings. Applications range from cooling server rooms and heating warehouses to filtering contaminants from manufacturing floors and controlling humidity in storage facilities.
How to Choose the Right Equipment
Start by identifying your primary need: temperature regulation, air movement, or air quality. Then consider your space size, existing infrastructure, power availability, and whether you need portable or permanently installed equipment. Matching capacity to square footage and load is critical for efficiency.
Where This Equipment Is Commonly Used
Common applications include office HVAC systems, industrial exhaust ventilation, cleanroom filtration, data center cooling, retail space heating, and residential air purification. Each environment has distinct requirements for capacity, filtration grade, noise level, and installation type.
Installation, Maintenance & Replacement Considerations
Many systems require periodic filter changes, belt inspections, or refrigerant checks. Stocking replacement parts and controls in advance reduces downtime. Always verify voltage compatibility and local code requirements before purchasing heating or cooling equipment for permanent installation.
Which Subcategory Fits Your Need?
Use this table to match your primary requirement to the right starting point.
| Need | Best Fit Subcategory | Why It Matters |
|---|---|---|
| Cool a room, building, or equipment enclosure | Air Conditioning & Cooling | Provides temperature reduction through refrigerant-based or evaporative systems sized by BTU or tonnage. |
| Remove dust, allergens, fumes, or humidity from the air | Air Quality & Filtration | Addresses airborne contaminants with filters, purifiers, and dehumidifiers rated for specific particle sizes and pollutant types. |
| Move air through a space or exhaust heat and fumes | Fans, Blowers & Ventilation | Improves airflow and air exchange without full HVAC infrastructure; suitable for spot cooling, exhaust, and circulation. |
| Warm a space during cold seasons or in cold climates | Heating Equipment | Covers unit heaters, radiant heaters, and other solutions sized by BTU output and fuel or power source. |
| Automate, monitor, or control an existing HVAC system | HVAC Controls | Thermostats, sensors, and controllers that improve efficiency and allow scheduling or remote management. |
| Maintain or repair existing climate control equipment | Parts & Service | Replacement components, filters, belts, and service items that extend equipment life and reduce downtime. |
Plan the right fit before choosing
Step 1: Define Your Climate Control Goal
Before selecting equipment, clearly identify whether your priority is temperature control, air movement, or air quality improvement. A space may need all three, but starting with the primary problem helps you size and budget correctly.
- Cooling or heating: Determine the BTU or tonnage needed based on square footage, insulation, and heat load.
- Ventilation: Calculate air changes per hour (ACH) required for the space type and occupancy level.
- Air quality: Identify contaminants (dust, fumes, allergens, moisture) to select the correct filtration or purification method.
Step 2: Assess Your Space and Infrastructure
Equipment performance depends heavily on the environment it operates in. Measure your space and evaluate existing infrastructure before purchasing.
- Room dimensions and ceiling height affect required equipment capacity.
- Check available power supply: voltage, phase, and amperage must match equipment specs.
- Determine whether ductwork, drainage, or mounting structures are already in place or need to be added.
Step 3: Plan for Ongoing Service and Parts
Climate control equipment requires regular maintenance to perform efficiently and last longer. Build a service plan into your purchasing decision.
- Identify filter replacement intervals and stock spare filters appropriate for your system.
- Review available HVAC controls and thermostats to automate scheduling and reduce energy use.
- Keep critical replacement parts on hand to minimize downtime during peak heating or cooling seasons.
This category is divided into six focused subcategories so you can navigate directly to the equipment type you need.
Cooling and heating capacity is measured in BTUs or tons; matching these figures to your space size is the most important selection step.
Air filters are rated on the MERV scale; higher ratings capture smaller particles but may restrict airflow in systems not designed for them.
Ventilation systems are sized by how many times per hour they replace the air in a space, a figure that varies by application and occupancy.
Common questions before buying
How do I know what size air conditioner or heater I need?
Capacity is primarily determined by the square footage of the space, ceiling height, insulation quality, and heat-generating equipment inside. A general rule is 20 BTUs per square foot for cooling, but industrial or high-heat environments require more detailed load calculations.
What is the difference between an air purifier and an air filter?
Air filters physically trap particles as air passes through them and are typically installed in HVAC systems or standalone units. Air purifiers may use additional technologies such as UV light or ionization to neutralize contaminants. The right choice depends on the type of pollutant you need to address.
Can I use a portable fan instead of a ventilation system?
Portable fans improve air circulation and can provide spot cooling, but they do not replace air or remove contaminants the way a ventilation system does. For spaces requiring code-compliant exhaust or a specific number of air changes per hour, a dedicated ventilation solution is necessary.
How often should HVAC filters be replaced?
Replacement frequency depends on the filter type, MERV rating, and how much particulate the system encounters. Standard filters in light-use environments may last 1 to 3 months, while high-efficiency filters in dusty or high-traffic spaces may need more frequent changes. Always follow the equipment manufacturer's guidelines.
Fans, Blowers & Ventilation
HVAC Controls, Parts & Service