Wednesday, August 21, 2013

Benefits of a Builder Provided HVAC Design

Historically, Residential Builders have required that their HVAC Trade Partners provide their own HVAC design for each plan at no cost to the Builder. On the surface, this sounds like a very favorable arrangement for the Builder ... but is it? ConsultAir can show you how Residential Home Builders, HVAC Contractors and even the future Homeowner would all benefit from a Builder Provided HVAC Design.



Reduced Bidding Cost and Cycle Time for Prospective HVAC Trade Partner

Assuming that the HVAC Trade Partner you have selected is utilizing an industry recognized and typically mandatory design criteria to determine their final design, each proposal will require approximately 3 ½ to 5 ½ hours to complete. By utilizing a Builder Provided HVAC Design, the design process is completed prior to issuance of a Request for Proposal (RFP). By eliminating the design element from the list of tasks that the HVAC Trade Partner must complete, the time required to produce a proposal is now reduced to one hour, a net reduction in cycle time of 350%. 

Example: You issue a Request for Pricing to five prospective HVAC Trade Partners for five separate plans.

Traditional Method - HVAC Trade Partner Provided Design 

Requires 112 ½ hours of design and estimating labor - *(4 ½ hours x 5 plans) x 5 Trade Partners = 112 ½ design and estimating hours 

Proposed Method - Builder Provided HVAC Design 

Requires 25 hours of estimating labor & no hours of design labor - *(1 hour x 5 plans) x 5 Trade Partners = 25 hours
The net reduction in required time and resources to your prospective HVAC Trade Partners is approximately 75 hours.




Reduced Bidding Cost and Cycle Time for the Builder 

Let’s consider the amount of time and the number of separate interactions that it typically takes for you to:
Ø  Accurately communicate your HVAC specifications to your prospective HVAC Trade Partner.
Ø  Gain a working understanding and adequate level of comfort for the quality of their unique design.
Ø  Get the prospective HVAC Trade Partner to merge and adjust as much of their design into the design that is currently being used by your existing or past HVAC Trade Partner.


Is this a familiar discussion?

Builder: “You are a half a ton too big”.

HVAC Trade Partner: “I’m not sure where you are getting your equipment sizing from, but my calculations are correct.”

Builder: “But we’ve been building this plan for years without any problem.”
HVAC Trade Partner: “If I change the equipment size, will you take responsibility for any issues that may arise?”


Keep in mind that the amount of time and the number of these interactions grow exponentially based on the number of prospective HVAC Trade Partners that you issue a request for pricing to.
When you use a Builder Provided HVAC Design, the majority of these interactions are completely eliminated and the number of hours required to determine which HVAC Trade Partner will be awarded your work is substantially decreased.



 
Improved Installation Efficiencies
A quality HVAC contractor will have to install an HVAC system in a specific plan at least 2 times before they are able to solidify their duct design and material & labor take-offs. By utilizing a Builder Provided Design, the majority of the HVAC Contractor’s “learning curve” is eliminated. The Builder Provided Design has already taken into account most of the field conditions that aren’t always apparent on the architectural drawings, including the coordination of chase and “TJI” joist duct openings as well as equipment locations.




Reduced Risk of Errors and Omissions in the Original Estimate

If an HVAC Contractor has the benefit of a quality and proven design, the likelihood of incurring additional costs not captured in the original material, equipment and/or labor estimate are substantially reduced.




Improved Customer Satisfaction & Reduced Warranty Exposure to the Builder & HVAC Contractor

Utilizing one proven design will substantially reduce the number of HVAC related warranty inconveniences for your customer as well as reduce warranty costs for the Builder and HVAC Trade Partner.




Improved Marketability

As you know, the full potential of many of the energy efficiency features that you build into your homes can only be achieved when combined with a professionally and properly designed HVAC system.
By utilizing a Builder Provided HVAC Design, you will be giving your sales team an opportunity to not only educate your prospective home buyers about how your unique approach to the design of your HVAC systems will benefit them, but when presented properly, your prospective homebuyers will then be armed with a great topic for discussion as they continue their search for their new home by visiting with the sales teams of other builders in your area.




A comprehensive Builder Provided HVAC Design should consist of:
ü Room-By-Room Manual J Load Calculation
ü Manual D Duct Design
ü Manual S Equipment Size Selection
ü 11x17 Mechanical Drawings (to scale)
ü Detailed HVAC Scope of Work and Specifications
ü Option Details and Design
ü Standardized RFP Response Form for the HVAC Contractor to enter the base house and itemized option prices.




A Builder Provided HVAC Design is a true “Win/Win/Win” for the Builder, HVAC Trade Partner and the future Home Owner.