Air Rotation vs. Rooftop Units

Compare Installation and System Savings For Yourself!

The Savings Really Add Up!

Faster Installation

Install in a matter of hours, not days or weeks because of the simple set-up process!


No Additional Rooftop Support

Our systems do not need additional roof support required with conventional rooftop units.


No Ductwork

Johnson Air-Rotation Systems DO NOT require ductwork.


Fewer Utility Hook-ups

Because one Johnson Air-Rotation System replaces multiple rooftop units, less utility hook-ups are needed, thus saving you time and money.


Lower Utility Costs

Johnson Air-Rotation Systems use less utilities than rooftop units.


Ground Level Servicing

Customers save money on repairs because ground level servicing means no need to climb on the roof and tackle potential weather elements such as snow, wind and rain, thus ensuring proper routine maintenance is followed.

Lower Horsepower

Johnson Air-Rotation Systems require lower horsepower than conventional rooftop units to heat and/or cool, thus saving you utility costs.


Lower Installation Costs

Save substantially on electrical installation costs that are associated with higher horsepower rooftop units.


No Rooftop Penetrations

Multiple rooftop penetrations are not required with our systems unlike rooftop units, meaning you don’t have to worry about leaking roofs or potential damage to your products and equipment.


Return on Investment

Johnson Air-Rotation Systems pay for themselves in a matter of years as a result of the utility savings vs. conventional rooftop units.


Portability

A significant number of our customers, especially tenants who are leasing a building on a short-term basis, prefer Johnson Air-Rotation Systems because of their portability. Other types of air conditioning systems are practically impossible to move to another location.


Longer Product Life

Higher quality construction and components results in a product lifespan of 30+ years versus 10-15 for rooftop units.

Pricing Budgets for Cooling Only & Cooling with Heating for Basic Warehouse Applications

Description (*) Johnson Air-Rotation System Cost Cost for a Condenser, specialties, controls, etc Mechanical Contractor’s Install of Air-Rotation $ (**) 6.5% avg Sales Tax $ Total Air-Rotation COOLING ONLY Install $ (***) $/sq ft Installed ARU COOLING ONLY system Comparable Rooftop COOLING ONLY – option (according to a Houston Mechanical) – $ (****) $/sq ft Installed Comparable Rooftop COOLING ONLY option ALTERNATIVE OPTIONS          aditional cost for adding heating Air-Rotation Mechanical Install (*****) 6.5% avg Sales Tax $ on Addition of Heating Total Install Costs for Air-Rotation WITH HEATING AND COOLING (******) $/sq ft for an  Installed Air-Rotation HEATING AND COOLING System
100,000 sq ft warehouse, 105,000 cfm unit, 230 tons, basic cooling only $61,000 $100,000 $79,900 $15,750 $256,650 $2.57 $392,600 $3.93 $23,000 $3,023 $306,173 $3.06
Description (*) 100,000 sq ft warehouse, 105,000 cfm unit, 230 tons, basic cooling only
Johnson Air-Rotation System Cost $61,000
Cost for a Condenser, specialties, controls, etc $100,000
Mechanical Contractor’s Install of Air-Rotation $ (**) $79,900
6.5% avg Sales Tax $ $15,750
Total Air-Rotation COOLING ONLY Install $ (***) $256,650
$/sq ft Installed ARU COOLING ONLY system $2.57
Comparable Rooftop COOLING ONLY – option (according to a Houston Mechanical) – $ (****) $392,600
$/sq ft Installed Comparable Rooftop COOLING ONLY option $3.93
ALTERNATIVE OPTIONS aditional cost for adding heating Air-Rotation Mechanical Install (*****) $23,000
6.5% avg Sales Tax $ on Addition of Heating $3,023
Total Install Costs for Air-Rotation WITH HEATING AND COOLING (******) $306,173
$/sq ft for an Installed Air-Rotation HEATING AND COOLING System $3.06

Note:  the above tonnage is higher-than-average for a typical warehouse application with inside design temps @ 80 degrees

Notes:
(*) – Double Fan Units, est $2k in freight included, 30′ tall ARUs, H&V Louvers, Condensate Pump, Avg Houston, TX cooling conditions, inside design @ 80 degrees for cooling (65 degrees for heating, stl conditions)
(**) – Mechanical’s share includes installation of ARU & condensing units + dual line refrigerant piping up to 100′, condensate, concrete pads & ballards, wall hole cutting and repairing, engineering drawings & permitting, commissioning; no electrical, no hot gas by-pass.
(***) – Does not include electrical sub-contracting work
(****) – Does not include electrical sub-contracting work, plumbing of condensate, independent test & balancing (often required with rooftops), roofing, roof cutting or patching, framing of roof openings, painting.
(*****) – Includes 100′ of gas piping, hole & install for flue, startup, etc. Summary: 2.) Additional significant costs with regard to electrical installation sub-contracting also works against rooftop units and in favor of Johnson Air-Rotation Systems equipment. As well, a roof’s structure is yet another potentially significant cost added against rooftops. 3.) Of course, the typical benefits and features of Johnson Air-Rotation Systems typically will apply: low energy costs, longer life of cooling system, ease of maintenance, better temperature control of the space, etc., etc.