Professional window cleaning offers a significant aesthetic and functional improvement for any property. Beyond just sparkling windows, it contributes to property maintenance, allows more natural light, and can even extend the lifespan of your window seals and frames by removing corrosive build-up.
How the Price is Calculated:
The total estimated price for window cleaning is determined by a combination of factors, primarily the total surface area to be cleaned, the pricing structure of the service provider, and any additional service charges. Our calculator simplifies this by using the following formula:
1. Total Window Area:
This is calculated by multiplying the number of windows by the average size of each window.
Total Window Area = Number of Windows × Average Window Size (sq ft)
2. Base Cleaning Cost:
This is the core cost of cleaning, derived from the total window area and the provider's rate per square foot.
Base Cleaning Cost = Total Window Area × Price Per Square Foot
3. Frequency Adjustment:
While not directly in this calculator's final sum, the cleaning frequency you select is crucial for scheduling and often influences long-term pricing. Regular cleaning (e.g., quarterly) can sometimes lead to slightly lower per-service rates compared to one-time or infrequent cleanings, as the build-up of dirt is less severe.
4. Travel Surcharge:
This is a fixed amount added to cover the costs associated with travel to your location. It accounts for fuel, vehicle maintenance, and labor time spent en route.
Travel Surcharge = Fixed Amount (as entered)
5. Total Estimated Price:
The final price is the sum of the base cleaning cost and the travel surcharge.
Total Estimated Price = Base Cleaning Cost + Travel Surcharge
Factors Influencing the Price:
Window Accessibility: Windows that are difficult to reach (e.g., require ladders, lifts, or special equipment) may incur higher costs.
Type of Windows: Skylights, French panes, or windows with intricate grids can sometimes increase labor time and thus the price.
Level of Dirt and Grime: Heavily soiled windows, especially those with paint splatters, hard water stains, or construction residue, will require more intensive cleaning and may cost more.
Location: Prices can vary regionally based on the cost of living and local market rates for cleaning services.
Additional Services: Services like cleaning window tracks, sills, or screens are often priced separately.
This calculator provides a standardized estimate. For an exact quote, it's always recommended to contact a professional window cleaning service for an on-site assessment.
function calculatePrice() {
var numberOfWindows = parseFloat(document.getElementById("numberOfWindows").value);
var averageWindowSize = parseFloat(document.getElementById("averageWindowSize").value);
var cleaningFrequency = parseInt(document.getElementById("cleaningFrequency").value);
var pricePerSquareFoot = parseFloat(document.getElementById("pricePerSquareFoot").value);
var travelSurcharge = parseFloat(document.getElementById("travelSurcharge").value);
var resultValue = document.getElementById("result-value");
var errorMessageElement = document.getElementById("errorMessage"); // Assuming an error message element might be useful
// Clear previous error messages
if (errorMessageElement) {
errorMessageElement.remove();
}
// Input validation
if (isNaN(numberOfWindows) || numberOfWindows <= 0) {
displayError("Please enter a valid number of windows.");
return;
}
if (isNaN(averageWindowSize) || averageWindowSize <= 0) {
displayError("Please enter a valid average window size.");
return;
}
if (isNaN(pricePerSquareFoot) || pricePerSquareFoot < 0) {
displayError("Please enter a valid price per square foot (must be 0 or greater).");
return;
}
if (isNaN(travelSurcharge) || travelSurcharge < 0) {
displayError("Please enter a valid travel surcharge (must be 0 or greater).");
return;
}
var totalWindowArea = numberOfWindows * averageWindowSize;
var baseCleaningCost = totalWindowArea * pricePerSquareFoot;
var totalEstimatedPrice = baseCleaningCost + travelSurcharge;
// Format the result to two decimal places
resultValue.innerText = "$" + totalEstimatedPrice.toFixed(2);
}
function displayError(message) {
var resultDiv = document.getElementById("result");
var errorMessageElement = document.createElement("p");
errorMessageElement.id = "errorMessage";
errorMessageElement.style.color = "red";
errorMessageElement.style.marginTop = "15px";
errorMessageElement.innerText = message;
resultDiv.insertBefore(errorMessageElement, resultDiv.firstChild);
document.getElementById("result-value").innerText = "$0.00"; // Reset result on error
}