Expert Technicians
Trust us to deliver reliable solutions and exceptional service.
Flexible Scheduling
Trust us to deliver reliable solutions and exceptional service.
Transparent Pricing
Trust us to deliver reliable solutions and exceptional service.
Expert Technicians
Trust us to deliver reliable solutions and exceptional service.
Flexible Scheduling
Trust us to deliver reliable solutions and exceptional service.
Transparent Pricing
Trust us to deliver reliable solutions and exceptional service.
Expert Technicians
Trust us to deliver reliable solutions and exceptional service.
Flexible Scheduling
Trust us to deliver reliable solutions and exceptional service.
Transparent Pricing
Trust us to deliver reliable solutions and exceptional service.
Expert Technicians
Trust us to deliver reliable solutions and exceptional service.
Flexible Scheduling
Trust us to deliver reliable solutions and exceptional service.
Transparent Pricing
Trust us to deliver reliable solutions and exceptional service.
Expert Technicians
Trust us to deliver reliable solutions and exceptional service.
Flexible Scheduling
Trust us to deliver reliable solutions and exceptional service.
Transparent Pricing
Trust us to deliver reliable solutions and exceptional service.
Who We Are and What We Do
With over 25 years of experience, Simplified HVAC and Mechanical Systems Design, LLC specializes in efficient HVAC solutions for residential, commercial, and industrial projects. We focus on custom designs using ACCA Manuals J, S, D, and N, ensuring energy efficiency, comfort, and cost-effectiveness. Serving clients across the U.S. and Canada, we deliver timely, high-quality systems tailored to your building's needs.
Our Clients
Architects
Architectural drawing assistance ,energy conservation strategies, equipment placement,and support for ventilation requirements & RESCheck compliance documentation.
Read MoreHomeowners
Key Factor to Consider Before Choosing
the Most Appropriate HVAC System for Your Home.
HVAC Contractors
Outsource
Heating And Cooling Loads Calculations
and Duct sizing to effectively cut costs..
Residential Builders
Key Factors
to Consider Before Choosing
the Appropriate HVAC System(s) for Your Home.
Why Choose Us
Simple, reliable mechanical designs provided with engineering documents based on over twenty-five years of experience, done right; first time, on time, anywhere in the U.S. or Canada.
Expert Technicians
We design smart, straightforward systems that are easy to install, cost-effective, and reliable, aligned with ASHRAE 62.2 standards.
Over 25 Years of Experience
Compliant, precise load analysis for new construction and retrofit projects, including HVAC commissioning, blower door testing, and external static pressure considerations.
Designs focus on reducing both Upfront costs and Long-term operating costs.
Designs are optimized by reducing both Upfront and Long-term operational costs using local hourly temperature analysis and appropriate medium range SEER2 equipment selections.
Fast Turnaround Time
Standard delivery of initial work within 5 business days for projects involving less than 5,200 square feet; rush service available.
Nationwide Service
Serving all 48 U.S. states and most of Canada with remote design support.
Client-Focused Approach
Clear communication, timely updates, and support from start to finish.
HVAC Calculation Services
Standard Delivery Schedule
- No more than five business days after receipt of design drawings and the retainer services fee.
- An additional fee (30% to 60%) may apply to a requested delivery of three business days or less when business conditions warrant due to abnormally high demand.
- An additional fee will not apply to a BLOCK LOAD calculation for new construction and less than 2,800 square feet of floor area
BLOCK LOAD Calculation
Fee ranges from $0.058 (< 1,600 Sq.Ft.) to $0.070 (< 5,900 Sq. Ft.) per Square Foot Floor Area.
Perfect for new construction projects with less than 2,800 square feet of floor area.
ACCA MANUAL J / ROOM-BY-ROOM LOADS
| SERVICE CLASS | SQUARE FEET | $ / Square Foot | FLOOR AREA | FEE |
|---|---|---|---|---|
| 1 | < 1,600 | $0.120 | 1,500 | $180 |
| 2 | < 2,400 | $0.130 | 2,100 | $273 |
| 3 | < 3,400 | $0.135 | 2,700 | $364 |
| 4 | < 5,900 | $0.140 | 3,500 | $490 |
DUCT SIZING - ACCA MANUAL D Calculations
| SERVICE CLASS | SQUARE FEET | $ / Square Foot | FLOOR AREA | FEE |
|---|---|---|---|---|
| 1 | < 1,600 | $0.070 | 1,500 | $105 |
| 2 | < 2,400 | $0.080 | 2,100 | $168 |
| 3 | < 3,400 | $0.085 | 2,700 | $230 |
| 4 | < 5,900 | $0.090 | 3,500 | $315 |
ACCA MANUALS J, S & D CALCULATIONS – Packaged Fees
| SERVICE Class | SQUARE FEET | $ / Square Foot | FLOOR AREA | FEE |
|---|---|---|---|---|
| 1 | < 1,600 | $0.23 | 1,500 | $345 |
| 2 | < 2,400 | $0.25 | 2,100 | $525 |
| 3 | < 3,400 | $0.26 | 2,700 | $702 |
| 4 | < 5,900 | $0.28 | 3,500 | $980 |
Important Notes
Note: A formal drawing with a detailed duct layout is NOT included in these calculation fees. A simplified sketch of the duct layout can be provided with an ACCA Manual D Calculation.
Duct layout concepts and responsibility are determined at the time of invoicing based on any specific request by clients, the mechanical engineer, architectural drawings, and the AHU location(s).
Final pricing and schedule are to be verified based on review of the architect, owner, contractor, or builder-submitted project information.
Computer Aided Designs
with ACCA MANUAL J CALCULATION, ACCA MANUAL D CALCULATION, and duct schematic
- Manual J_Heating & Cooling Loads
- Manual S_Equipment Selection
- Manual D_Blower performance and duct design & sizing
- Manual T_Air Distribution
- Manual N_Commercial Load Calculation
- ASHRAE Standards 62.1 & 62.2 _ Ventilation
- Building Codes: State & Local
- Window Glass Selections: Low-E, Argon Filled, S.H.G.C ~ 0.27, U-Factor < ~ 0.30
HVAC Design Process
Getting started is simple—just share your project details and location. We analyze your building's needs, design a custom HVAC solution, and deliver accurate results ready for implementation.
Integration of the ACCA Manuals J, S & D Calculations,
and ACCA Manual Design activities.
Focused HVAC Solutions for Every Project
At Simplified HVAC and Mechanical Systems Design, LLC, we specialize in creating efficient, cost-effective HVAC solutions that meet the unique needs of each project. With over thirty years of experience, we focus on providing customized system designs based on the latest industry standards, including ACCA Manual J Calculation, ACCA Manual S Calculation, ACCA Manual D Calculation, and ACCA Manual N Calculation. Whether it’s residential, commercial, or industrial, we ensure that every system is designed for optimal performance, energy conservation, and comfort, tailored specifically to your building's requirements and location.
Our Happy Customers
Builders and HVAC contractors trust Simplified HVAC for reliable, code-compliant designs that improve efficiency and comfort.
Michael GreeneSimplified HVAC's designs are always accurate and easy to work with. They've helped us reduce installation errors and pass inspections with confidence.
5.0 rating based on 1,234 ratings
Ashley CollinsWorking with Simplified HVAC is seamless. Their quick turnaround and precise reports save us time and improve project efficiency across the board.
5.0 rating based on 1,234 ratings
Tom ReynoldsSimplified HVAC has been a game changer. Their reliable designs have helped us avoid costly mistakes and boosted customer satisfaction.
5.0 rating based on 1,234 ratings
Laura BennettThe team at Simplified HVAC consistently delivers clear, code-compliant designs that help us stay on schedule and avoid costly delays.
5.0 rating based on 1,234 ratings
Kevin DawsonWe've relied on Simplified HVAC for multiple builds. Their attention to detail and fast response times make them an essential part of our process.
5.0 rating based on 1,234 ratings
- Quality heating & air conditioning solutions