A home energy audit is a detailed assessment of how your home uses energy. It typically looks at factors like location, square footage, insulation level, and major appliances. The goal is to estimate your total energy consumption, break it down to show where energy is being used, and identify opportunities for improvement. In many cases, audits are performed in person by a technician who walks through your home, inspects equipment, and may use tools like infrared cameras or blower doors. While thorough, this process can be time-consuming, expensive, and often requires scheduling around someone entering your home.

WattWisdom guides users through a simple, step-by-step online flow to estimate household energy usage—no home visit required. You start with a few basics (location, home type, and square footage), then add more detail if you want—like appliance types or specs—to tighten the estimate. At the end, you'll get an interactive dashboard with your total usage, category breakdowns (HVAC, water heating, appliances, etc.), and climate-zone context. You're always in control: provide as little or as much as you're comfortable with, and skip anything you don't have handy. No one needs to come count light bulbs or inspect your equipment. (Think TurboTax: a guided, choose-your-detail experience.)

WattWisdom is built for anyone who needs a quick, flexible way to understand a home's energy usage. For homeowners, it's a tool to find out where energy is going, how to cut costs, or plan for efficiency upgrades—without needing to bring in an auditor. It's also helpful when moving into a new home, especially if you don't have a year of utility bills but need an estimate for planning solar or battery systems. For professionals—like solar installers, home performance contractors, realtors, or energy consultants—WattWisdom offers a simple way to generate usage estimates that can inform system sizing, support incentive applications, or guide upgrade recommendations. It helps bridge the gap between guesswork and full-scale audits with minimal friction.

WattWisdom currently serves the continental United States.

All you need for an estimate is your general location or address, home type, and approximate square footage. That's enough to generate a quick result. After that, you can provide only as much or as little information you want to improve accuracy. If you have them, technical documents or labels for major appliances will improve accuracy—e.g., AC tonnage/SEER or heat pump HSPF, furnace type/efficiency, water heater type (electric/gas/heat-pump) and capacity, and any known specs for large loads like pool pumps or EV charging.

It depends on how much detail you choose to provide. Most users can get a solid baseline estimate in about 10 minutes. If you opt to add appliance details and fine-tune everything, plan for 20–40 minutes, and up to about an hour if you're entering specs for many devices. More information generally increases the precision of your results.

WattWisdom's estimates are built on a foundation of engineering logic, not guesswork. The underlying calculations were developed by a team of licensed Professional Engineers (PEs) with hands-on experience in residential energy systems, solar, and electrification—licensed across 13 states. Our model combines proven engineering baselines, your home's details, and climate data from public sources. The more information you provide (like appliance specs or past utility bills), the tighter the estimate becomes. For most homes, results fall within a ±10–30% range, but actual energy use may vary depending on thermostat habits, occupancy, equipment maintenance, and weather. While it's not a certified audit, it's a fast, research-informed way to get close without the clipboard or contractor.

Yes. Your location plays a key role in shaping your estimate. We factor in typical weather patterns and seasonal temperatures in your area to better estimate heating and cooling needs, which are often the biggest drivers of energy use. This also helps account for region-specific equipment like dehumidifiers, humidifiers, and pool systems that may run more often depending on the climate.

Yes. Your progress autosaves to your account so you can return anytime and pick up where you left off.

It gives a low-cost, low-commitment way to understand your energy use, prioritize upgrades, and prepare for solar or electrification—without scheduling an in-home audit.