Technical content reviewed November 13, 2026 · Tillman & Associates
Heating and cooling applications
The Advanced Series transfers heat between a fluid and an air stream. The manufacturer describes steam, hot-water and glycol heating as well as liquid-cooling applications such as lube-oil and pump-seal cooling.
The fan needs electrical power, but the heat-transfer duty depends on the fluid conditions and entering air. A heating selection and a cooler selection require different design information; identify the intended service before comparing models.
AH versus AV
AH identifies the horizontal-airflow arrangement and AV the vertical-airflow arrangement. The catalog also describes an AH tandem-fan configuration. Airflow direction should match the available installation space and desired discharge path.
Include the mounting orientation, piping access and maintenance space in the inquiry. Fan diameter by itself does not define the heat-exchanger construction or prove the required duty.
Core construction and design conditions
Catalog choices include different tube and fin arrangements, pass configurations, connections and finishes. These are application decisions, not interchangeable upgrades. Fluid compatibility, fouling exposure and the pressure-drop allowance belong in the selection discussion.
Provide fluid type and concentration, flow, entering temperature, target leaving temperature or duty, and entering-air conditions. Separate normal operating conditions from design pressure and temperature. If the fluid is oil, include the specified product and available property data.
Ratings, motors and support
The catalog contains differing broad pressure statements. Use the selected exchanger’s approved pressure/temperature rating and nameplate; a family maximum is not a rating for every model.
Motor and certification choices must match the electrical service and site classification. Ask Tillman to review the complete assembly, mounting/support and control requirements. The online configuration tool records catalog choices; it does not establish capacity, pressure drop or leaving temperatures.
What to send Tillman
- Heating or cooling duty and required output
- Fluid identity, concentration, flow and inlet/outlet requirements
- Entering-air temperature range and elevation
- Allowable fluid pressure drop and design pressure/temperature
- AH/AV orientation, connections, materials and available space
- Motor supply, site classification, support arrangement and quantity
Common questions
Can AH/AV be considered for a liquid cooler?
Yes. The catalog includes liquid-cooling applications. The actual fluid and operating duty require application review.
Does choosing more passes prove the required output?
No. The complete operating conditions and pressure-drop allowance must be evaluated.
Does the online builder calculate performance?
No. It records a catalog configuration for staff review.