Keen Learning Hub

Keen Resources

Download the official Keen products brochure.

Keen Product Brochure (PDF)

Glossary + Visual Reference

Keen Airflow Tools

Duct Sizing Calculator

Calculate duct sizes based on CFM and velocity requirements.

Static Pressure → CFM Estimator

Estimate actual airflow from static pressure readings and equipment specifications.

Airflow Balancing / Register CFM Estimator

Estimate register CFM using velocity measurements or flow hood correction factors when you don't have balancing equipment.

Take multiple readings across register face
Typically 0.65-0.80 for standard registers

Pressure Drop / Coil & Filter Static Loss Library

Lookup typical static pressure drop values for common system components and get recommendations when pressure is too high.

Leave blank to see typical range

Flex Duct Friction Correction Tool

Account for friction increase when flex duct is not fully stretched. Poor installation can double your friction loss!

50%
Sloppy
100%
Tight
100% = Fully stretched (optimal) | 75% = Slight sag (field typical) | 50% = Loose/sloppy (high friction)

Keen Refrigerant Tools

Superheat / Subcooling Calculator

Diagnose AC/heat pump performance by comparing actual vs target superheat and subcooling.

Refrigerant Charge Adjustment Calculator

Calculate additional refrigerant charge required when line set length exceeds manufacturer's factory baseline.

Auto-filled based on refrigerant & line size

Psychrometric Chart

Calculate humidity, dew point, and enthalpy with visual psychrometric chart representation.

Keen Electrical Tools

Combined Conduit Fill & Wire Size Calculator

Calculate conduit fill, voltage drop, and conductor sizing with NEC compliance checking.

Circuit Information

Project Information (Optional)

Conduit Information

Conductors in Conduit

Purpose Material Wire Size Quantity Insulation Temp Rating CCC Action

Tip: Add at least 3 conductors (hot, neutral, ground). You can mix different wire sizes.

No results yet. Go to Inputs tab and click Calculate.

No charts available. Go to Inputs tab and click Calculate.

NEC Quick Reference Tables

📊 NEC Chapter 9 Table 4: Conduit Fill Areas

📊 NEC Chapter 9 Table 5: Conductor Areas (THHN/THWN)

📐 Voltage Drop Formulas

⚠️ Disclaimer:
This tool is for estimation purposes only. Always verify per NEC 2023 and local code requirements. Consult a licensed electrician for final installation design and approval.

Motor & Compressor Circuit Sizing Helper

Select proper breaker and wire size using MCA and MOCP values from nameplate.

Wire & Breaker Size Selector

Size wire based on ampacity (NEC 310.16) and voltage drop, select correct breaker using NEC 125% rule.

Load & System Information

Distance & Conductor Properties

Voltage Drop Criteria

Battery & Generator Sizing Tool

Size generators and battery backup systems for residential and commercial applications.

Load Selection

W
W
W
W
W

Generator Sizing

Battery Backup Sizing

🔋 Common Battery Module Sizes:
Tesla Powerwall 2/3: 13.5 kWh
Enphase IQ Battery 10: 10.08 kWh
LG RESU 10H: 9.8 kWh
Generac PWRcell M6: 18 kWh
Sonnen eco 10: 10 kWh
Franklin WH aPower: 13.6 kWh

Commercial / Distributor Tools

Distributor Packing List

Manage and generate packing lists for distributors.

Click the button below to access the Packing List Tool:

Open Packing List Tool

Commercial Electrification ROI Calculator

Calculate ROI for hotel, multifamily, and commercial HVAC electrification projects with state rebates.

Project Information

System Data

Rebates & Incentives

MA: $2,000/ton
Used for depreciation tax benefit calculation

Energy & Financial Parameters

Keen Sales Tools

Manual J Calculator

Calculate heating and cooling loads for residential HVAC systems.

Click the button below to access the full Manual J Calculator:

Open Manual J Calculator

Keen Quote Tool

Generate professional HVAC quotes and proposals.

Click the button below to access the Quote Tool:

Open Quote Tool

Heat Pump Cost Comparison Calculator

Compare the lifetime cost of ownership between Keen ENERGY STAR heat pumps and conventional units. See how our high-efficiency units deliver significant savings over time.

Why Keen Heat Pumps?
Keen ENERGY STAR qualified heat pumps feature superior HSPF and SEER ratings, delivering exceptional heating and cooling efficiency that translates to real savings on your energy bills.

Your Information

⭐ Keen ENERGY STAR Unit

Higher = More Efficient
Higher = More Efficient

Conventional Unit

Federal minimum: 7.7
Federal minimum: 13

Compare heat pump vs fossil fuel costs and equipment efficiency using your energy bills.

Heating Information

Leave blank if not heat pump

Cooling Information (Optional)

Average monthly increase during AC season

Upgrade Equipment Specs

Calculate CO₂ emission reductions from electrification and fuel switching.

Keen Marketing Tools

COMING SOON

Social Media Post Generator

Create professional, brand-aligned social media content for Facebook, Instagram, LinkedIn, and more — with just a few clicks.

What This Tool Will Do:

  • Generate ready-to-post content for all major platforms
  • Create seasonal promotion templates
  • Build installation showcase posts
  • Highlight Keen's efficiency advantages
  • Include recommended hashtags & CTAs

Perfect For:

Contractors Distributors Sales Teams
COMING SOON

Presentation Generator

Create professional sales presentations, pitch decks, and marketing kits featuring Keen's industry-leading advantages.

Pro Tip: Select "Financing & Rebates" slide and choose your state to include state-specific rebate information in your presentation.

Presentation Settings

Select Slides to Include

Presentation Preview

Disclaimer: Rebate and incentive information is provided for reference only and may change without notice. Keen is not responsible for the accuracy of rebate amounts or eligibility requirements. Always verify current rebates with your state energy office or utility provider before presenting to customers.
COMING SOON

Product Specification & Comparison Builder

Generate professional comparison sheets showing how Keen heat pumps outperform oil, propane, baseboard, and competing heat pump brands.

Comparison Settings

COMING SOON

Marketing Asset Kit Builder

Generate custom, brand-aligned marketing assets including product one-pagers, sell sheets, infographics, and social media templates.

Select Assets to Generate

Product One-Pager

Single-page product overview with specs

"Why Choose Keen?" Sell Sheet

Compelling benefits overview

Cold-Climate Infographic

-22°F operation visualization

Warranty Explainer

10-Year Parts + Labor advantage

Efficiency Comparison

35 SEER2 / 30 HSPF2 highlights

Social Media Carousel

Multi-slide social templates

Direct Mail Postcard

Coupon postcard with custom offer

Branding Options

Asset Kit Preview

Keen Business Tools

Job Pricing Calculator

Calculate job pricing with accurate cost tracking, margin analysis, and multiple pricing tiers for cash and financing options.

How to Use: Enter your costs below. The calculator will automatically compute your base price, apply your desired margin, and show cash and financing prices with built-in discount buffers.

Cost of Goods Sold (COGS)

Include taxes, delivery, handling fees
All materials used on the job
Payments to subcontractors

Labor Calculation

Taxes, insurance, benefits (typically 25-35%)
Calculated Labor Cost: $0.00
For minor price fluctuations
Commission on base price
Total COGS: $0.00

Margin & Base Price

Target margin before overhead
Base Price (includes margin + commission): $0.00
Commission is built into this price to preserve your target margin

Permits & Sales Tax

Applied to base price
Base Sales Price: $0.00
Base price + permit + sales tax (commission already factored in)

Cash Pricing

Maximum negotiation buffer
Maximum Discount Amount
$0.00
Cash Sales Price
$0.00

Financing Pricing

Dealer fee charged by lender
Financing Fee Amount
$0.00
Financing Sales Price
$0.00

Profit Analysis

Fixed costs as % of base price
Gross Profit After Commission
$0.00
0.0%
Calculated Overhead
$0.00
Net Profit
$0.00
0.0%

Pricing Summary

COGS
$0
Base Sales Price
$0
Cash Price
$0
Financing Price
$0

Disclaimer: This calculator is provided as a convenience tool for estimation purposes only. All prefilled values, default percentages, and suggested rates are examples and are not recommendations for your specific business. Keen makes no representations or warranties regarding the accuracy, completeness, or suitability of any calculations for your particular circumstances. Users are solely responsible for verifying all inputs, outputs, and pricing decisions. Keen shall not be liable for any errors, omissions, or any losses, damages, or claims arising from the use of this tool. Always consult with a qualified accountant or financial professional for pricing and business decisions.

Privacy Policy

Last Updated: January 2025

1. Information We Collect

The Keen Learning Hub tools operate entirely in your browser. We do not collect, store, or transmit any personal information or calculation data entered into these tools. All calculations are performed locally on your device.

2. Cookies and Tracking

This application does not use cookies or tracking technologies. We do not track your usage, browsing behavior, or tool interactions.

3. Third-Party Links

Our tools may contain links to external websites (such as keenhomepro.com). Those sites are governed by their own privacy policies, which we encourage you to review.

4. Data Security

Since all calculations occur in your browser and no data is transmitted to our servers, your input data remains private and secure on your device.

5. Changes to This Policy

We may update this Privacy Policy from time to time. Any changes will be reflected with an updated "Last Updated" date at the top of this page.

6. Contact Information

If you have questions about this Privacy Policy, please contact Keen through our official website at www.keenhomepro.com.

Terms of Service

Last Updated: January 2025

1. Acceptance of Terms

By accessing and using the Keen Learning Hub tools ("Tools"), you acknowledge that you have read, understood, and agree to be bound by these Terms of Service. If you do not agree to these terms, you may not use the Tools.

2. Use of Tools - Estimation Only

The calculators and tools provided are for estimation and educational purposes only. They are not a substitute for professional HVAC design, engineering analysis, or licensed contractor services. All results should be verified by qualified professionals before making any installation, purchasing, or system modification decisions.

3. No Professional Advice

These Tools do not constitute professional engineering, technical, or financial advice. Keen and its affiliates are not responsible for any decisions made based on calculator outputs. Always consult with licensed HVAC professionals, engineers, and local authorities having jurisdiction before proceeding with any work.

4. Disclaimer of Warranties

THE TOOLS ARE PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. Keen makes no warranty that:

  • The Tools will meet your requirements or expectations
  • Calculations will be accurate, reliable, or error-free
  • Results will reflect real-world performance or outcomes
  • The Tools will be available without interruption or technical issues

5. Limitation of Liability

TO THE MAXIMUM EXTENT PERMITTED BY LAW, KEEN AND ITS AFFILIATES, OFFICERS, EMPLOYEES, AND AGENTS SHALL NOT BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES ARISING FROM:

  • Use or inability to use the Tools
  • Reliance on calculator outputs or estimates
  • Equipment purchases, installations, or modifications based on Tool results
  • System failures, energy costs, or performance issues
  • Loss of revenue, profits, data, or business opportunities

You assume all risk and liability for any actions taken based on information from these Tools.

6. Assumption of Risk

You acknowledge that HVAC systems are complex and involve numerous variables including but not limited to climate conditions, building characteristics, equipment specifications, installation quality, and operational factors. Calculator results are simplified estimates that cannot account for all real-world variables.

7. Indemnification

You agree to indemnify, defend, and hold harmless Keen, its affiliates, officers, directors, employees, and agents from any claims, damages, losses, liabilities, and expenses (including legal fees) arising from your use of the Tools or violation of these Terms.

8. Modifications to Tools and Terms

Keen reserves the right to modify, suspend, or discontinue the Tools at any time without notice. We may also update these Terms of Service periodically. Continued use of the Tools after changes constitutes acceptance of the revised terms.

9. Governing Law

These Terms shall be governed by and construed in accordance with the laws of the United States, without regard to conflict of law provisions. Any disputes shall be resolved in courts of competent jurisdiction.

10. Severability

If any provision of these Terms is found to be unenforceable or invalid, that provision shall be limited or eliminated to the minimum extent necessary, and the remaining provisions shall remain in full force and effect.

11. Contact

For questions regarding these Terms of Service, contact Keen at www.keenhomepro.com.

BY USING THESE TOOLS, YOU ACKNOWLEDGE THAT YOU HAVE READ, UNDERSTOOD, AND AGREE TO BE BOUND BY THESE TERMS OF SERVICE.

Keen Solar Tools

Property Location

Battery & Generator Sizing Tool

Size generators and battery backup systems for residential and commercial applications.

Load Selection

W
W
W
W
W

Generator Sizing

Battery Backup Sizing

🔋 Common Battery Module Sizes:
Tesla Powerwall 2/3: 13.5 kWh
Enphase IQ Battery 10: 10.08 kWh
LG RESU 10H: 9.8 kWh
Generac PWRcell M6: 18 kWh
Sonnen eco 10: 10 kWh
Franklin WH aPower: 13.6 kWh
KEEN
KEEN